Ethereum and Solidity: The Complete Developer's Guide from Udemy

Smart Contracts? They're here. The Ethereum Blockchain? Covered. Solidity? Yep.

There can be no understating it: Ethereum and Blockchain technology is the most disruptive force in years. Companies cannot hire developers who understand blockchain technologies fast enough, but there are a tiny number of resources published to help you truly understand what blockchains are used for, let alone build apps with them. That's the purpose of this course: to be the best resource online for learning about Ethereum, blockchains, and how to build apps with this new technology.

The development community is still figuring out the best way to use Ethereum in the creation of new and exciting apps. I spent a tremendous amount of time to research and create best practice for interfacing with Ethereum from Javascript. I can't overstate it enough; this course will show you the best and most easily repeatable patterns for creating production-ready apps with Ethereum.

What tools and libraries are used?

The Ethereum tech ecosystem is in constant change. Don't be fooled by other courses that mention how you'll learn a dozen different libraries. Every library that you'll use with Ethereum breaks and is deprecated on a near-weekly basis. Instead, this course will teach you how to assemble your own boilerplate package to develop, compile, and test Smart Contracts. By learning the core technologies, you'll be prepared to adjust to Ethereum no matter how the ecosystem changes.

What is Ethereum?

Ethereum is a cryptocurrency much like Bitcoin, and it has been heralded as Bitcoins successor. Whereas Bitcoin currently has issues scaling with an increasing backlog of transactions, Ethereum is poised to surpass Bitcoin in performance, popularity, and value. Ethereum was created to help developers like you create applications focused around transferring money or value from one party to another.

What is Solidity?

Solidity is a programming language for writing Smart Contracts. Essentially, think of it as a way to control a bank account with code. With Solidity, we can write applications that simulate a crowd funding campaign, a lottery, a loan, or any other type of financial instrument. Don't be intimidated by learning 'another' programming language; Solidity is known to be quite similar to Javascript and exceptionally easy to pick up for anyone who has previous JS experience. This course will give you all the tools you need to master Solidity.

What's inside

Learning objectives

Understand the why engineers would want to create an app with ethereum
Build compelling blockchain applications using the ethereum blockchain
Design, test, and deploy secure smart contracts

Learn the true purpose and capabilities of ethereum and solidity
Use the latest version of ethereum development tools (web3 v1.0)
See practical examples to comprehend what the blockchain and mining are

Understand the why engineers would want to create an app with ethereum
Build compelling blockchain applications using the ethereum blockchain
Design, test, and deploy secure smart contracts
Learn the true purpose and capabilities of ethereum and solidity
Use the latest version of ethereum development tools (web3 v1.0)
See practical examples to comprehend what the blockchain and mining are

Syllabus

What is Ethereum?

Introduction

Course Resources

A Short History Lesson

Link to Original Bitcoin White Paper

Interfacing with Ethereum Networks

Metamask Setup and Configuration

Ethereum Accounts

Getting Test Ether to Use in the Course

What's a Transaction?

Why'd We Wait?

A Quick Note About the Next Lecture

Basic Blockchains

Block Time

Smart Contracts

The Solidity Programming Language

Updated Remix Instructions for new UI - Do Not Skip

Our First Contract

Contract Structure

Function Declarations

Deploying Contract in New Remix UI

Testing with Remix

Redeploying Contracts

Behind the Scenes of Deployment

More on Running Functions Than You Want to Know

Wei vs Ether

Gas and Transactions

Mnemonic Phrases

We Need More Test Ether!

Obtaining More Test Ether from Recommended Faucet

Smart Contracts with Solidity

Installing Node.js, npm and Git

Contract Deployment

Completed Boilerplate

Project Requirements

Project File Walkthrough

Compiling Solidity

Invalid asm.js or Constructor Deprecation Warning

The Compile Script

Testing Architecture

Breaking Change - Web3 v4 and Ganache

Installing Modules

Web3 Versioning

Web3 Providers

Testing with Mocha

Mocha Structure

Fetching Accounts from Ganache

Refactor to Async/Await

Deployment with Web3

Deployed Inbox Overview

Asserting Deployment

Verifying the Initial Message

Testing Message Updates

Deployment with Infura

Infura Signup

Super Important Note about Seed / Recovery Phrase Security

Wallet Provider Setup

Deployment to Testnet

Observing Deployment on Etherscan

Remix Permissions and Metamask

Deployed Contracts in Remix

Project Review

Updating Your Inbox Project to Solc v0.8.9

Advanced Smart Contracts

The Lottery Contract

Lottery Design

Reminder on Updated Remix UI

Basic Solidity Types

Starting the Lottery Contract

The Message Global Variable

Overview of Arrays

Overview of Mappings and Structs

Big Solidity Gotcha

Entering the Lottery

Validation with Require Statements

The Remix Debugger

Pseudo Random Number Generator

Selecting a Winner

Sending Ether from Contracts

Resetting Contract State

Requiring Managers

Function Modifiers

Returning Players Array

Contract Review

Completed Boilerplate - Do Not Skip

New Test Setup

Test Project Updates

Web3 v4 and Ganache Breaking Change Reminder

Test Helper Review

Asserting Multiple Players

Try-Catch Assertions

Testing Function Modifiers

End to End Test

Building Interactive Front-Ends

Ethereum App Architecture

Boilerplate and React App Updates - Do Not Skip

Application Overview

Good to know

Know what's good

, what to watch for

, and possible dealbreakers

Covers the essential components of blockchain technology, such as Ethereum and Solidity, making it suitable for those new to the field

Provides practical examples and exercises to enhance understanding of blockchain concepts and Solidity programming

Emphasizes the development of production-ready apps using Ethereum, equipping learners with practical skills

Taught by Stephen Grider, an experienced instructor known for his accessible teaching style

Incorporates the latest version of Ethereum development tools and best practices, ensuring relevance to current industry standards

Requires learners to have a basic understanding of JavaScript, which may be a barrier for complete beginners

Reviews summary

Solid ethereum foundations

Learners say that this course provides a very solid foundation in Ethereum and Solidity with engaging assignments. The instructor is well received by students. However, students would like to see more up-to-date course material.

Course assignments are engaging.

Instructor is well received.

"the instructor is very pedagogic"

Course uses outdated material.

"Some things are outdated and problems appear which need to be solved in ways not presented in the course material."

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 Ethereum and Solidity: The Complete Developer's Guide with these activities:

Review JavaScript fundamentals before starting the course

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Ensure a strong foundation by refreshing your knowledge of JavaScript, the core programming language for interacting with Ethereum.

Browse courses on JavaScript Fundamentals

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Go through online tutorials or resources.
Practice writing basic JavaScript code.
Review fundamental JavaScript concepts.

Join a Solidity study group

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Enhance your understanding by collaborating with peers, discussing concepts, and sharing knowledge.

Browse courses on Solidity

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Find or create a study group with fellow Solidity learners.
Set regular meeting times and establish a discussion agenda.
Take turns presenting topics, sharing your understanding, and engaging in discussions.
Collaborate on projects and assignments to reinforce your learning.

Read Mastering Ethereum by Andreas M. Antonopoulos and Gavin Wood

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Gain a comprehensive understanding of Ethereum and its underlying concepts by reading this authoritative book.

View Mastering Ethereum: Building Smart Contracts... on Amazon

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Obtain a copy of the book.
Read the book thoroughly, taking notes and highlighting key concepts.
Discuss the book's content with fellow learners or an expert.
Apply the knowledge gained to your Solidity projects or assignments.

Four other activities

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Show all seven activities

Complete interactive Solidity drills

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Enhance your understanding of Solidity syntax and concepts by completing interactive coding exercises.

Browse courses on Solidity

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Access online Solidity playgrounds or interactive coding environments.
Start practicing by writing basic Solidity code snippets.
Challenge yourself with more complex code exercises.
Review and refine your solutions to improve your understanding.

Build a basic voting system using Solidity

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Apply your Solidity skills to a practical use case by developing a simple voting system using Solidity.

Browse courses on Solidity

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Understand the requirements and design of a voting system.
Write Solidity code to implement the voting system's logic.
Test and deploy your voting system on a blockchain network.
Evaluate the results and make improvements to your system.

Contribute to open-source Solidity projects

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Expand your practical experience by collaborating on real-world Solidity projects.

Browse courses on Solidity

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Identify open-source Solidity projects that align with your interests.
Review the project's documentation and codebase.
Identify areas where you can contribute.
Submit your contributions to the project's repository.

Develop a Solidity tutorial for beginners

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Solidify your knowledge by creating a tutorial that explains Solidity fundamentals in a clear and concise manner.

Browse courses on Solidity

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Research and gather information on Solidity basics.
Plan the structure and content of your tutorial.
Write the tutorial, ensuring it's easy to follow and understand.
Share your tutorial online or with fellow learners.

Career center

Learners who complete Ethereum and Solidity: The Complete Developer's Guide will develop knowledge and skills that may be useful to these careers:

Smart Contract Engineer

Smart Contract Engineers are responsible for building, testing, and deploying smart contracts on the blockchain. This course will provide you with a strong foundation in Ethereum, Solidity, and Smart Contract development, which will make you a highly sought-after candidate for this role.

See salaries and explore the career path for Smart Contract Engineer

Blockchain Developer

Blockchain Developers are in very high demand and are tasked with creating and maintaining blockchain applications. By taking this course, you will gain a deep understanding of the Ethereum Blockchain and Solidity. This course will help you with designing, testing, and deploying secure Smart Contracts.

See salaries and explore the career path for Blockchain Developer

Cryptocurrency Developer

Cryptocurrency Developers build and maintain cryptocurrencies. This course will provide you with a comprehensive understanding of the Ethereum Blockchain and Solidity. This knowledge will be essential for developing secure and scalable cryptocurrencies.

See salaries and explore the career path for Cryptocurrency Developer

Decentralized Application Developer

Decentralized Application Developers build and maintain applications that do not rely on a central server. This course will teach you how to use the Ethereum Blockchain and Solidity to develop decentralized applications that are secure and reliable.

See salaries and explore the career path for Decentralized Application Developer

Blockchain Architect

Blockchain Architects design and develop blockchain solutions for businesses. This course will help you with understanding the fundamentals of blockchain technology, as well as the Ethereum Blockchain and Solidity. This knowledge will be invaluable in designing and developing scalable and secure blockchain solutions.

See salaries and explore the career path for Blockchain Architect

Blockchain Consultant

Blockchain Consultants advise businesses on how to implement and use blockchain technology. This course will give you a deep understanding of the Ethereum Blockchain and Solidity. This knowledge will be valuable in helping businesses understand the benefits and challenges of blockchain technology.

See salaries and explore the career path for Blockchain Consultant

Software Engineer

Software Engineers design, develop, and maintain software applications. This course will help you build a foundation in blockchain technology, Ethereum, and Solidity. This knowledge will make you a more well-rounded Software Engineer and will open up new opportunities for you in the field.

See salaries and explore the career path for Software Engineer

Financial Analyst

Financial Analysts use data to make recommendations about investments. This course will help you build a foundation in blockchain technology, Ethereum, and Solidity. This knowledge will give you a better understanding of the financial implications of blockchain technology and will help you make more informed investment decisions.

See salaries and explore the career path for Financial Analyst

Data Scientist

Data Scientists use data to solve problems and make predictions. This course will help you build a foundation in blockchain technology, Ethereum, and Solidity. This knowledge will allow you to explore new applications of data science, such as analyzing blockchain data to identify trends and patterns.

See salaries and explore the career path for Data Scientist

Product Manager

Product Managers are responsible for the development and launch of new products. This course will help you build a foundation in blockchain technology, Ethereum, and Solidity. This knowledge will give you a better understanding of the potential applications of blockchain technology and will help you develop more innovative products.

See salaries and explore the career path for Product Manager

Project Manager

Project Managers plan and execute projects. This course will help you build a foundation in blockchain technology, Ethereum, and Solidity. This knowledge will give you a better understanding of the challenges and opportunities of blockchain projects and will help you manage them more effectively.

See salaries and explore the career path for Project Manager

Business Analyst

Business Analysts analyze business processes and identify opportunities for improvement. This course will help you build a foundation in blockchain technology, Ethereum, and Solidity. This knowledge will give you a better understanding of the potential applications of blockchain technology and will help you identify opportunities for businesses to improve their operations.

See salaries and explore the career path for Business Analyst

Systems Analyst

Systems Analysts design and implement computer systems. This course will help you build a foundation in blockchain technology, Ethereum, and Solidity. This knowledge will give you a better understanding of the potential applications of blockchain technology and will help you design more efficient and effective systems.

See salaries and explore the career path for Systems Analyst

Information Security Analyst

Information Security Analysts protect computer systems and networks from security breaches. This course will help you build a foundation in blockchain technology, Ethereum, and Solidity. This knowledge will give you a better understanding of the security challenges of blockchain technology and will help you develop more secure systems.

See salaries and explore the career path for Information Security Analyst

Database Administrator

Database Administrators manage and maintain databases. This course will help you build a foundation in blockchain technology, Ethereum, and Solidity. This knowledge will give you a better understanding of the potential applications of blockchain technology and will help you manage more secure and efficient databases.

See salaries and explore the career path for Database Administrator