We may earn an affiliate commission when you visit our partners.
Lee Prescott

The complete introduction to English pronunciation is a course designed to teach you all of the sounds we use in standard English so you can improve your English pronunciation and start to speak with confidence.

Read more

The complete introduction to English pronunciation is a course designed to teach you all of the sounds we use in standard English so you can improve your English pronunciation and start to speak with confidence.

Pronunciation is a difficult area to teach because students from different languages have different problems with different English sounds. But after studying this course you will understand HOW we make the sounds in English and also WHICH sounds are difficult. We will practice the sounds with over 400 example words in 10 hours of video. We will also do practice activities together in the lessons and you will have access to many more activities as PDFs.

In addition to the sounds, we will also practice other important areas such as syllables, word stress, rhyming, US/UK differences, and how the read and write the IPA phoneme alphabet.

So maybe you are a student who wants to improve your pronunciation or maybe you are a teacher who is not sure how to teach pronunciation to your students, whatever your motivation this course can help.

Let's start.

Enroll now

Here's a deal for you

We found an offer that may be relevant to this course.
Save money when you learn. All coupon codes, vouchers, and discounts are applied automatically unless otherwise noted.

What's inside

Learning objectives

  • All 44 sounds used in standard english pronunciation
  • The key sounds for good english pronunciation
  • Problem sounds you need to practice
  • Word stress - what it is and why it is so important
  • How to count syllables in english and why it is important
  • The ipa phonemes and why they are important
  • Key differences between british and american english pronunciation
  • Have more confidence speaking english

Syllabus

Introduction to the course

Welcome to the Learn English with Lee complete Introduction to English pronunciation.

Hi, I'm Lee. I'm an English teacher from England and have been teaching English since 2007. I have taught all levels, all ages, and students from over 60 countries. So I am very experienced about the common pronunciation problems students have when they study English.

My course is designed for two groups of people.

The first are English students. Many students find pronunciation difficult because they are not taught HOW to make the sounds by their teacher. This often makes students feel shy and nervous about speaking. With my course you will quickly learn everything you need to improve your pronunciation and start speaking English confidently.

The second group are English teachers. In my experience, many teachers avoid teaching pronunciation because they don't know much about the topic. So this course will introduce you to some important information about how we make sounds and also some activity ideas you can use in your class.

Whatever your motivation to study, this course is my way to share my knowledge with you and with the 10 hours of video (with over 400 example words), practice exercises, and extra PDFs, I want to help you achieve your learning goals.

I'm excited about joining you on your learning journey. So let's go!

Read more

Let's look in more detail at the topics we will study in this course.

The main learning goal of this course is to introduce you to the 44 sounds of English (and some differences between British and American pronunciation). This includes studying VOWELS, DIPHTHONGS, and CONSONANTS. I will teach how we make the sounds and which sounds are difficult. Then we will look at example words and do practice activities.

In addition we will study syllables, word stress, and rhyming and also look at helpful examples and do some practice activities together.

Let's start!

The IPA phonemes are symbols (for example /aʊ/ /ð/ /ɜ:/ /ŋ/) we use to write pronunciation. Why? Because English spelling is so strange it often doesn't help us! Don't be scared of them! They are our friends because they make it easier to study pronunciation. We will use these symbols a lot in the course so let's talk about them a little bit.

We will learn and practice the 12 vowel sounds of English. What IS a vowel? How is vowel different from a consonant? How do we make the vowel sounds? And which vowel sounds are difficult for students

What are vowels? How do we make them? In this short introduction video we talk about these topics and I introduce you to a "map" of the mouth we use to understand the different vowel sounds in English. Remember: pronunciation is physical! When we study pronunciation it is like taking our mouth to the gym! So this "map" will show you the different mouth shapes we use to make the different sounds. There is also a PDF document for you to download and study.

The Schwa sound is the most important sound in English! But it is also difficult. In this video lesson we will study this difficult but important sound and look at example words to help you make this sound correctly.

The schwa is important for many reasons. One big reason is we use it to make weak forms. In this lesson we will talk about this important topic and you will understand why the schwa is so important for your pronunciation.

Schwa wars is a fun activity which teaches students how common the schwa is. The activity is simple: find the number of schwas in a sentence. It sounds easy...but is it?

The /e/ sound (for example "men") is quite an easy sound and is also a very common sound. In this video we look at some useful example words to help you make this sound.

The /æ/ sound (for example "cat") is another easy sound but is important because it is very common so in this video lesson we will look at some useful examples to help you.

Minimal pair activities are a very useful way to practice learning the different sounds in English. We will do this activity a few times during this course. This activity in this lesson practices the /e/ and /æ/ sounds.

The /ʌ/ sound (for example in the word "up") is a bit difficult. So let's learn about this sound.

An activity to help you practice the difficult /ʌ/ sound

The short vowel/long vowel pair /ɪ/ /i:/ cause lots of problems for students. The problem is that many languages do not have long vowels, so students often have problems with words like "ship" and "sheep" or "chip" and "cheap" etc. In this lesson we will study these important sounds.

A minimal pair activity is the perfect way to practice the difference between /ɪ/ and /i:/

The /ɑ:/ sound (for example car) is another long vowel in English. It is not a difficult sound, but let's practice it. in this lesson we will look at some example words and also talk about how this sound is made and also some US/UK differences.

The /ɜ:/ sound is very difficult. It's a long vowel and is similar to the schwa (also difficult). It's an important sound for good pronunciation so in this lesson we will practice this very difficult sound. It is also another sound with some US/UK differences so we will talk about that.

Students often say /ɑ:/ when they want to say /ɜ:/ In this lesson we will practice this difficult pair and learn more about the difference between these two sounds.

Another common sound. The /ɒ/ sound (for example "dog") is not so difficult. This is the first rounded vowel we will look at. At the end of this lesson you will practice this sound and learn about the rounded vowel sounds.

The /ʊ/ sound in English (for example "good") is not so common, but is important when we study diphthongs later in the course. After this lesson you will know more about this sound and be well prepared for when we study diphthongs very soon.

The /ɔ:/ sound is another long vowel sound. These are a little bit difficult for some students because many languages do not have long vowels. After this lesson you will be able to confidently make this sound.

In this lesson we learn about the /u:/ sound in English (for example "you", "blue"). It is usually okay for most students but let's practice with some example words.

Well done! You have now studied ALL of the vowel sounds in English. We have studied short vowels, long vowels, and rounded vowels and we have also studied the difficult /ə/ /ʌ/ and /ɜ:/ sounds. In this video we review what we have studied until now.

We have studied a lot. But let's practice more. To improve your pronunciation it is important for your ear to know the different vowel sounds. If your ear knows the difference then your mouth can make the different sounds. We have already practiced minimal pairs so now let's practice ALL of the vowel sounds in this exercise lesson. Do your ears know all of the English vowel sounds?

At the end of this section you will know how we count syllables in English and know why it is important if you want to have good English pronunciation.

A syllable is a "part" or "unit" of a word. In this video you will learn how we count syllables in English and why understanding syllables is important for you if you want to have good pronunciation.

In the previous lesson we learned about syllables. Now in this lesson we will do an exercise to practice counting syllables in English words. Good luck!

There are 8 diphthongs in English. In these lessons we will learn what they are, look at many example words, practice making these sounds, and learn which diphthongs are difficult for students

In this video lesson we will learn about diphthongs. A diphthong is two vowel sounds spoken together and they are very important to make your pronunciation sound natural. Some are easy but some are difficult, so it is important to study them and practice making these sounds.

At the end of this lesson, you will be able to make the /eɪ/ sound (for example "wait" or "eight"). We will look at this diphthong first because it is probably the easiest.

In this lesson we study the /aʊ/ sound (e.g. "house"). We need to use the /ʊ/ sound and this sound is quite important for a few diphthongs so we should practice.

In this lesson we look at the /əʊ/ sound (e.g. "no"). It has both the /ə/ and /ʊ/ sounds - both not so easy. so let's look at some helpful example words.

Because the /əʊ/ sound is a little bit difficult, students often say /ɒ/. In this activity we practice the minimal pair "won't" (with the /əʊ/ sound) and "want" (with the /ɒ/ sound). Good luck!

In this lesson we will study the /ɪə/ sound (e.g. "here"). It has a schwa so it is a little tricky, but the sound is very common in English so it is important to study it.

In this lesson we will study the /ʊə/ sound. It's quite difficult because it uses also the /ʊ/ and /ə/ sound. However, it is very interesting because it is different in US pronunciation but also many British English speakers use /ɔ:/ instead. 

In this lesson we practice the /aɪ/ sound (e.g. "eye"). It's not so difficult but it is very common so it's important for us to practice and look at some example words.

In this lesson we study the /eə/ sound (e.g. "hair"). It's a sound much more common in British English than American English so you will also learn how American people pronounce this sound.

In this lesson we will practice the /ɔɪ/ sound (e.g. "boy"). Not so difficult, but we need to talk about the /ɔ/ sound to make this diphthong correctly.

Well done! You've now studied all of the diphthongs in English. Diphthongs are a very important part of good English pronunciation so you need to know them very well. So let's have a quick review and also try another practice activity in the attached PDF.

In this short section we will review syllables but add the diphthong sounds we have just finished

We've already looked at syllables when we finished the vowel section. However, we also need to study how we count syllables with diphthongs. In this lesson you will learn how to do this and we will also do a practice activity.

At the end of this section you will be introduced to word stress and reasons why it is important for good English pronunciation

Word stress is SO important in English for many reasons. In this lesson you will learn why it is so important and do an activity with me to help practice your ability to hear word stress. In addition, there are extra PDF activities too to help you learn about this topic.

Minimal pairs are usually about words with one different sound. However, this minimal pair activity is about words with a different stress. Students often confuse words like "18" and "80" so this is a useful activity to practice this common mistake.

We will learn and practice the consonant sounds of English. We will learn how different sounds are made by using the lips, teeth, tongue, throat, or nose and which sounds are VOICED or UNVOICED

Well done! We've studied and practiced all of the vowels and diphthongs in English. Now it's time to look at the consonants. There are lots of consonants in English and it is important to understand HOW we make the different sounds. In this short video I will introduce you to English consonants so you can be prepared to practice the sounds in the consonant lessons.

The /j/ and /w/ sounds are sometimes called semi-vowel sounds. They are consonants...but also a little bit like vowels. In this video lesson you will practice these sounds which become very important in the next course when we study connected speech.

In this video we will study the /l/ and /r/ sounds. For some students these sounds can be quite difficult. Especially the /r/ sound. For example, Asian students often cannot notice the difference. Other nationality students, for example Latin speakers OVER-pronounce the /r/. So it's important for us to practice these two important sounds.

In this activity lesson we will look at two very useful and fun TONGUE TWISTERS to help you practice the /l/ and /r/ sounds.

In this video we will practice the /h/ sound. For most students it is easy, but we will learn about the difference between unvoiced and voiced consonants in this lesson. This idea will be important for other consonant sounds too.

The plosive sounds are a group of six consonant sounds /p/ /t/ /k/ and /b/ /d/ /g/. In this short video we will learn about how we make these very common sounds.

Our first plosive pair. In this lesson we will learn HOW we make these sounds and what the difference is between them.

Our second plosive pair. In this lesson we will learn HOW we make these sounds, what the difference is between them, and how they are different to /p/ and /b/

Our final plosive pair. In this lesson we will learn HOW we make these sounds, what the difference is between them, and how they are different to /t/ and /d/

In this activity lesson we will practice a very common tongue twister to practice some of the plosive sounds we have studied.

In this video lesson you will learn about the nasal consonants. These are sounds we make with our nose. Then we will practice the nasal consonant /m/ and learn how it is different to /n/

In this video lesson you will learn about the second nasal consonant: the /n/ sounds. It is an easy sound but we will practice with some example words so you understand the difference between the /n/ and the /m/ sound.

The /ŋ/ sound is a strange sound in English. In this video lesson you will learn about this little bit difficult sound and which spelling it is always connected to in English (HINT, we use this sound in the word "English).

This is the "th" sound in English and is one of the most difficult sounds in English. Maybe THE most difficult. This is because many languages do not have this sound. In this lesson you will learn HOW we make this sound and how you can quickly improve your English pronunciation by making this sound correctly.

The /ð/ sound is another way to pronounce the "th" sound in English. In this video lesson we will learn how it is different to the /θ/ sound and look at some helpful example words.

In this activity lesson we will practice two very useful and fun tongue twisters to practice the difficult "th" sounds. Good luck!

In this video lesson we will practice the /s/ and /z/ sounds. For most students these sounds are quite easy. However, the difference between the unvoiced and voiced sound becomes important in the next video.

In English, if a word ends in a "s", sometimes we pronounce it as /s/ and other times we pronounce it as /z/ (and sometimes /ɪz/ ). In this video lesson you will learn the rules so you never make this mistake again.

Let's practice the sounds we have just studied with some more useful and fun tongue twisters.

In this lesson we practice the very common /f/ and /v/ sounds. We will learn HOW to make these sounds and why for some students they can be a problem.

In this activity video we will practice some more important sounds with some minimal pairs and we will talk about why some students have problems.

These two sounds have very strange symbols, but don't be worried. Actually the /ʃ/ sound is quite common and even though the /ʒ/ sound is more difficult it is not so common. In this video lesson we will look at some example words to help you pronounce these sounds.

Another tongue twister activity  video to practice the /s/ and /ʃ/sounds because some students confuse these two sounds. This tongue twister is a classic.

Two more sounds with difficult looking symbols. But don't worry, in this lesson we will learn how to pronounce these sounds and how to make the sounds correctly.

Wow! You've now studied ALL of the sounds of English. Maybe some sounds are easy. Maybe some are still difficult for you. But that's no problem. We have lots of example words now so you can continue to practice and improve. Before the next section, let's review.

Practicing the IPA phonemes

In this course we have used the IPA phonemes. It is a very, very tool to help you improve your pronunciation. Here are some more activities to help you remember.

Actually, I think it's more important to be able to read the phonemes than write them. BUT...if you can write them it will be very helpful for you when you make notes in your textbook. So let's practice writing them a bit more.

Rhyming in English

If you listen to music in English you probably have heard lots of rhyming. It is very common in songs and poems and it is a good way to train your ear to "feel" the sounds of English. In this video lesson we explain rhyming and practice with some examples and an ODD ONE OUT exercise.

End of the course

You did it! Well done! I'm very happy you've finished the course. Now you have all the information you need to improve your English pronunciation and also KEEP improving your pronunciation in your English journey. However, this is only the beginning. In this video we will talk about your next steps. Good luck! It's been a pleasure to be your teacher!

Save this course

Save The Complete Introduction to English Pronunciation to your list so you can find it easily later:
Save

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in The Complete Introduction to English Pronunciation with these activities:
Review IPA Phoneme Chart
Familiarize yourself with the IPA chart to better understand the symbols used throughout the course.
Show steps
  • Download a copy of the IPA chart.
  • Review each symbol and its corresponding sound.
  • Practice writing words using IPA symbols.
Read 'Ship or Sheep?' by Ann Baker
Improve your ability to distinguish between similar sounds by working through minimal pair exercises in a dedicated textbook.
Show steps
  • Obtain a copy of 'Ship or Sheep?'.
  • Work through the exercises, focusing on sounds you find difficult.
  • Listen to the audio and repeat the words.
Read 'English Pronunciation in Use' by Mark Hancock
Supplement your learning with a structured textbook that provides additional exercises and audio examples.
Show steps
  • Obtain a copy of 'English Pronunciation in Use'.
  • Work through the units relevant to the course syllabus.
  • Complete the exercises and listen to the audio examples.
Four other activities
Expand to see all activities and additional details
Show all seven activities
Practice Minimal Pairs
Improve your ability to distinguish between similar sounds by practicing minimal pairs.
Show steps
  • Find a list of English minimal pairs.
  • Listen to recordings of each pair.
  • Record yourself saying each word.
  • Compare your pronunciation to the recordings.
Record Yourself Speaking
Gain self-awareness of your pronunciation by recording yourself speaking English and identifying areas for improvement.
Show steps
  • Choose a short passage of English text.
  • Record yourself reading the passage.
  • Listen to the recording and identify any mispronounced sounds.
  • Focus on correcting those sounds in future recordings.
Follow Online Pronunciation Tutorials
Refine your pronunciation skills by following online tutorials that focus on specific sounds or aspects of pronunciation.
Show steps
  • Search for online pronunciation tutorials on YouTube or other platforms.
  • Select tutorials that address your specific pronunciation challenges.
  • Follow the instructions and practice the exercises in the tutorials.
Help Others with Pronunciation
Solidify your understanding by helping others with their pronunciation challenges.
Show steps
  • Find a language exchange partner or online forum where people are learning English.
  • Offer to help them with their pronunciation by listening to them speak and providing feedback.
  • Explain the correct pronunciation of sounds and provide practice exercises.

Career center

Learners who complete The Complete Introduction to English Pronunciation will develop knowledge and skills that may be useful to these careers:
English as a Second Language Teacher
An English as a Second Language Teacher helps non-native speakers learn English. This involves teaching grammar, vocabulary, reading, writing, and, crucially, pronunciation. This course, which teaches all 44 sounds used in standard English pronunciation, builds a foundation for teaching pronunciation effectively. Understanding how sounds are made, which sounds are difficult for learners, and how to correct common pronunciation errors is essential for an English as a Second Language Teacher. Additionally, the syllabus covers syllables, word stress, rhyming, and US/UK differences, all of which are invaluable for teaching comprehensive English skills. If you want to be an English as a Second Language Teacher, this course will give you the knowledge to properly teach English pronunciation.
Pronunciation Coach
A Pronunciation Coach specializes in helping individuals improve their pronunciation skills. This course, being a complete introduction to English pronunciation and designed to teach all of the sounds used in standard English, greatly helps with this career. Pronunciation Coaches assess clients' current pronunciation, identify areas for improvement, and develop personalized training programs. This course covers the 44 sounds of English focusing on key sounds and problem sounds. The course also covers syllables, word stress, and rhyming. Given how it covers the key fundamentals of English pronunciation, this course is very helpful if you want to be a Pronunciation Coach.
Voice and Accent Trainer
A Voice and Accent Trainer works with clients to modify or refine their voice and accent. The goal might be to neutralize an accent, adopt a new one, or simply improve clarity and confidence in speech. This course, which provides a complete introduction to English pronunciation, can be helpful for this work. Voice and Accent Trainers need a strong understanding of phonetics, including how sounds are produced and perceived and the IPA phoneme alphabet. By understanding how we make the sounds in English along with which sounds are difficult, trainers can work with their clients to improve their voice and accent. Aspiring Voice and Accent Trainers may find the detailed instruction in this course useful.
ESL Curriculum Developer
An ESL Curriculum Developer creates educational materials for English as a Second Language programs. This work involves designing lesson plans, activities, and assessments that cater to diverse learner needs. This course on English pronunciation may be useful, as a key component of ESL curricula focuses on pronunciation. ESL Curriculum Developers must know all 44 sounds used in standard English pronunciation, the key sounds, problem sounds, word stress, and syllables. Anyone seeking a role as an ESL Curriculum Developer may want to develop their expertise by taking this course.
Radio Announcer
A Radio Announcer introduces and comments on music and other programs that are broadcast on the radio. A radio announcer might interview guests or provide updates on news and weather. This course may be helpful, because clear English pronunciation is fundamental to the role. Radio announcers may be called upon to host a variety of different radio shows, and they must be able to clearly communicate with their audience. Therefore, it is helpful for the Radio Announcer to learn about the 44 sounds used in standard English pronunciation.
Podcast Host
A Podcast Host creates and presents audio content on a specific topic or theme. Clear and engaging pronunciation is important for a Podcast Host, as it helps to maintain listener interest and comprehension. Podcast Hosts can utilize this course to improve their pronunciation and speak more confidently. Podcast Hosts can also learn how to effectively use syllables, word stress, and rhyming. This will certainly help them achieve their goals in podcasting.
Voice Actor
Voice Actors provide voices for characters in animations, video games, commercials, audiobooks, and other media. Clear and engaging pronunciation is essential for a Voice Actor, as they must communicate effectively through voice alone. This course teaching all 44 sounds used in standard English pronunciation can assist one in this regard. Voice Actors must vary their delivery and modulate their voice to suit different characters and situations. Studying key sounds for good English pronunciation as well as problem sounds to practice helps a Voice Actor in their line of work. Aspiring Voice Actors may find this course very helpful.
Speech-Language Pathologist
A Speech Language Pathologist assesses, diagnoses, and treats communication and swallowing disorders. While typically requiring an advanced degree, a Speech Language Pathologist deals with a variety of speech issues, including pronunciation difficulties. This English pronunciation course may serve as a useful supplemental resource. Speech Language Pathologists often work with clients on articulation and phonology and benefit from a deep knowledge of phonetics. Considering this course teaches all 44 sounds used in standard English pronunciation, Speech Language Pathologists may find value in the course's coverage of how sounds are made and how to improve pronunciation. If you want to be a Speech Language Pathologist, this course may be helpful to you in building up your knowledge of English sounds.
Interpreter
Interpreters convert spoken language from one language to another. While fluency in both languages is critical, an Interpreter who works with English benefits from a clear and accurate pronunciation. This course helps with this aim. Interpreters often work in real-time, so a strong command of English sounds and pronunciation nuances is essential. Improving your command of English pronunciation through learning all 44 sounds used in standard English pronunciation is also important. This course is therefore helpful for Interpreters.
Linguist
A Linguist studies language. While typically requiring an advanced degree, this encompasses its structure, history, and social context. This course on English pronunciation can be informative, especially for those specializing in phonetics or phonology. Linguists benefit from a deep understanding of how sounds are produced, perceived, and organized within a language system. Learning all 44 sounds used in standard English pronunciation, including key sounds, problem sounds, word stress, syllables, and the IPA phonemes, is essential for a Linguist. Those interested in phonetics will find that this course builds a foundation.
Foreign Language Teacher
A Foreign Language Teacher instructs students in a language other than their native tongue. Though focused on English pronunciation, the course's approach to breaking down sounds, identifying challenges, and providing practice activities may be transferable. Foreign Language Teachers benefit from understanding how sounds are produced and perceived, and the course's focus on the IPA phonemes helps here. Foreign Language Teachers may find the course helpful.
Speech Writer
A Speech Writer crafts speeches for individuals or organizations, paying close attention to tone, style, and audience. While this course focuses on pronunciation, it may assist a Speech Writer in crafting speeches that are easier to deliver and understand. Speech Writers benefit from an understanding of how sounds and words are perceived by listeners. Paying attention to syllables and word stress is also crucial to writing a good speech. This course may be helpful for Speech Writers.
Translator
A Translator converts written text from one language to another. While this course focuses on pronunciation, it may indirectly benefit a translator by enhancing their overall understanding of the English language, especially if they translate audio or video content where pronunciation is relevant. Those seeking a career change into translation may find this course helpful.
Customer Service Representative
A Customer Service Representative interacts with customers to provide information, address inquiries, and resolve issues. Clear and understandable communication is essential in this role. This course can help them improve their English pronunciation and speak more confidently. A Customer Service Representative may work with clients from all over the world, and if their job requires them to speak English, they may benefit from learning key sounds and problem areas related to English pronunciation. Understanding the differences between British and American English pronunciation may be particularly beneficial.
Technical Writer
A Technical Writer creates clear and concise documentation for technical products or processes. While not directly related, this course might be relevant if the Technical Writer works on materials for language learning software or pronunciation guides. The syllabus's structure can provide inspiration on organizing information. Technical Writers may find the course helpful.

Reading list

We've selected two books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in The Complete Introduction to English Pronunciation.
Provides a comprehensive guide to English pronunciation, covering individual sounds, stress, and intonation. It valuable resource for learners who want to improve their pronunciation skills. The book includes audio materials and exercises to help learners practice and internalize the concepts. It is often used as a supplementary textbook in English pronunciation courses.
Focuses on improving English pronunciation through minimal pair exercises. It helps learners distinguish between similar sounds that can often be confused. The book is particularly useful for learners who struggle with specific sound distinctions. It provides clear explanations and ample practice opportunities to master these challenging sounds.

Share

Help others find this course page by sharing it with your friends and followers:

Similar courses

Similar courses are unavailable at this time. Please try again later.
Our mission

OpenCourser helps millions of learners each year. People visit us to learn workspace skills, ace their exams, and nurture their curiosity.

Our extensive catalog contains over 50,000 courses and twice as many books. Browse by search, by topic, or even by career interests. We'll match you to the right resources quickly.

Find this site helpful? Tell a friend about us.

Affiliate disclosure

We're supported by our community of learners. When you purchase or subscribe to courses and programs or purchase books, we may earn a commission from our partners.

Your purchases help us maintain our catalog and keep our servers humming without ads.

Thank you for supporting OpenCourser.

© 2016 - 2025 OpenCourser