Web3 Development Course
Master dApp development from scratch. Build smart contracts with Solidity, integrate frontends with ethers.js, implement ERC-20/721 tokens, and deploy production-grade Web3 applications.
What's Inside Every Lesson?
Every topic is designed so complete beginners can follow along step by step
Interactive Code Editor
Write & run real code in the browser - no setup needed
Practice After Every Topic
Hands-on exercises reinforce what you just learned
Q&A Flip Cards
Common questions answered with simple explanations
Module Quizzes
Test your knowledge before moving to the next module
Mini Projects
Build real apps - a calculator, to-do list, and more
Visual Diagrams
Concepts explained with clear, annotated diagrams
Who This Course Is For
For frontend developers building decentralized applications (dApps). Covers wallet integration, smart contract interaction, IPFS, and the full Web3 development stack.
Prerequisites
JavaScript proficiency and a basic understanding of blockchain concepts.
First published June 2024 · Updated 2026
What You'll Learn
- Write and deploy Solidity smart contracts
- Build full-stack dApps with React and ethers.js
- Implement ERC-20, ERC-721, and ERC-1155 token standards
- Audit and secure smart contracts against common vulnerabilities
- Integrate decentralized storage with IPFS and Chainlink oracles
- Deploy to mainnet and Layer 2 networks (Polygon, Arbitrum)
Career Opportunities
Course Modules Overview
Introduction to Web3 & Ethereum Ecosystem
4 topics
Solidity Fundamentals
4 topics
Smart Contract Architecture
4 topics
Development Environment & Tooling
4 topics
Testing & Debugging Smart Contracts
4 topics
EVM, Gas & Transaction Lifecycle
4 topics
Token Standards & Implementation
4 topics
Frontend Integration & dApp Development
4 topics
Decentralized Storage & Off-Chain Data
4 topics
Smart Contract Security & Auditing
4 topics
DeFi Protocols & Advanced Patterns
4 topics
Production Web3 & Deployment
4 topics
Complete all 12 modules to unlock your course completion certificate
Course Curriculum
12 comprehensive modules covering everything from basics to advanced topics
Introduction to Web3 & Ethereum Ecosystem
Understand Web3 fundamentals, the Ethereum ecosystem, accounts, wallets, and how dApps differ from traditional applications.
Solidity Fundamentals
Learn Solidity from the ground up — types, functions, control flow, mappings, structs, and your first deployed contracts.
Smart Contract Architecture
Build professional contract architecture using inheritance, interfaces, libraries, events, and established design patterns.
Development Environment & Tooling
Set up professional Web3 dev environments with Hardhat and Foundry, write deployment scripts, and deploy to Sepolia testnet.
Testing & Debugging Smart Contracts
Write comprehensive tests, use fuzzing, measure gas consumption, and debug contract failures with traces.
EVM, Gas & Transaction Lifecycle
Understand EVM execution, the EIP-1559 fee model, transaction lifecycle from signing to inclusion, and gas optimization.
Token Standards & Implementation
Implement production-grade ERC-20 tokens, ERC-721 NFT collections, and ERC-1155 multi-tokens using OpenZeppelin.
Frontend Integration & dApp Development
Build full-stack dApps: connect MetaMask, read/write contract data, handle transactions, and use modern wagmi React hooks.
Decentralized Storage & Off-Chain Data
Store files on IPFS, design NFT metadata, index blockchain data with The Graph, and fetch off-chain data via Chainlink.
Smart Contract Security & Auditing
Master smart contract security: reentrancy, access control, flash loans, front-running, and professional audit techniques.
DeFi Protocols & Advanced Patterns
Build DeFi building blocks: AMMs, lending, staking, flash loans, proxy upgrade patterns, and DAO governance contracts.
Production Web3 & Deployment
Deploy to mainnet and L2s, implement contract monitoring, set up CI/CD for smart contracts, and plan your Web3 career.
Your Learning Roadmap
Follow this structured path - from first concepts to production-ready mastery
Learn Web3 concepts, Solidity basics, and deploy your first contract
Build tokens, dApps, and full-stack Web3 applications
Master DeFi protocols, security auditing, and production deployment
Learn Web3 concepts, Solidity basics, and deploy your first contract
Build tokens, dApps, and full-stack Web3 applications
Master DeFi protocols, security auditing, and production deployment
Tools & Technologies
Essential tools you'll master during this course
Solidity
Smart contract programming language
Hardhat
Ethereum development & testing framework
Foundry
Fast smart contract testing toolkit
ethers.js
Ethereum JavaScript library
MetaMask
Browser wallet & Web3 gateway
OpenZeppelin
Secure smart contract standards
IPFS
Decentralized file storage
Chainlink
Decentralized oracle network
Ready to Start Learning?
Begin your journey with Module 1 and build your skills step by step. Completely free, no registration required.
Start Building dApps