Web3 & Smart Contracts
Free Intermediate course · 12 lessons · 4 weeks · Certificate on completion
Build, deploy, and audit smart contracts on Ethereum. Solidity, testing, and security from day one. Across 12 lessons you'll move from fundamentals to a portfolio-ready outcome — at your own pace, with quizzes after each lesson and a final exam to certify your mastery.
What you'll learn
- EVM mental model
- Solidity fundamentals
- ERC-20 and ERC-721
- Testing with Foundry
- Common vulnerabilities
- Gas optimization
Skills you'll pick up
- EVM mental model
- Solidity fundamentals
- ERC-20 and ERC-721
- Testing with Foundry
- Common vulnerabilities
- Gas optimization
Tools covered
- Web3
- Real-world projects
- Quizzes
- Final exam
Course modules
Module 1: EVM mental model
Module 1 of Web3 & Smart Contracts. 3 lessons · 3h
Module 2: Solidity fundamentals
Module 2 of Web3 & Smart Contracts. 3 lessons · 3h
Module 3: ERC-20 and ERC-721
Module 3 of Web3 & Smart Contracts. 3 lessons · 3h
Module 4: Testing with Foundry
Module 4 of Web3 & Smart Contracts. 3 lessons · 3h
Lessons in this course
- EVM mental model
- Solidity fundamentals
- ERC-20 and ERC-721
- Testing with Foundry
- Common vulnerabilities
- Gas optimization
- Front-end with ethers.js
- Deploying to a testnet
- Web3: Deep dive 9
- Web3: Deep dive 10
- Web3: Deep dive 11
- Web3: Deep dive 12
Instructor
Elena Volkov — Smart Contract Dev
Elena Volkov is a Smart Contract Dev with years of hands-on experience teaching Web3 to thousands of learners worldwide.
Certificate
Finish every lesson and pass the final exam to earn a free, verifiable Learnera certificate for Web3 & Smart Contracts. It can be downloaded as a PDF and shared on LinkedIn.
Career outcomes
Median global salary $105,000 per year · median India salary ₹14,00,000 per year · 115,679 open roles worldwide
- Web3 Specialist
- Senior Web3 Lead
- Web3 Consultant
Frequently asked questions
Is the Web3 & Smart Contracts course free?
Yes. Every Learnera course, including Web3 & Smart Contracts, is completely free — lessons, quizzes, the final exam, and the certificate.
How long does Web3 & Smart Contracts take?
12 lessons, typically completed in 4 weeks at a comfortable pace.
Do I get a certificate?
Yes — pass the final exam and you receive a free, verifiable certificate you can share on LinkedIn.