Tutorial Series

Web3.js Tutorial Series

Learn how to interact with the Ethereum blockchain using Web3.js library. Build powerful dApps with comprehensive tutorials and practical examples.

Course Overview

This comprehensive tutorial series covers everything you need to know about Web3.js, from basic blockchain interactions to building complex decentralized applications. Perfect for developers looking to enter the Web3 space.

Duration

12 hours of content

Level

Beginner to Advanced

Projects

8 hands-on projects

Module 1: Web3.js Fundamentals

Get started with Web3.js by learning the core concepts and setting up your development environment. Understand how to connect to Ethereum networks and perform basic operations.

Topics Covered:

  • • Installing and configuring Web3.js
  • • Connecting to Ethereum networks (Mainnet, Testnets)
  • • Understanding providers and signers
  • • Reading blockchain data (blocks, transactions)
  • • Working with accounts and wallets

Module 2: Smart Contract Interaction

Learn how to interact with smart contracts using Web3.js. Deploy contracts, call functions, and handle events in your JavaScript applications.

Practical Skills:

  • • Loading and deploying smart contracts
  • • Calling contract functions (read/write)
  • • Handling transaction receipts and events
  • • Working with contract ABIs
  • • Gas estimation and optimization

Module 3: Building dApps

Put your knowledge into practice by building complete decentralized applications. Learn frontend integration, user experience patterns, and production deployment strategies.

Project Examples:

  • • Token wallet application
  • • NFT marketplace frontend
  • • DeFi dashboard
  • • Voting dApp
  • • Multi-signature wallet interface

Module 4: Advanced Web3 Development

Master advanced Web3.js techniques including batch operations, event filtering, multi-chain support, and performance optimization for production applications.

Advanced Features:

  • • Batch transactions and multicall
  • • Event filtering and indexing
  • • WebSocket connections
  • • Error handling and retries

Production Ready:

  • • Multi-chain architecture
  • • Caching and performance
  • • Security best practices
  • • Testing strategies

Prerequisites & Setup

Required Skills:

  • • JavaScript ES6+ proficiency
  • • Basic understanding of blockchain
  • • HTML/CSS knowledge
  • • Node.js and npm experience

Development Setup:

  • • Node.js 16+ and npm
  • • MetaMask browser extension
  • • Code editor with JavaScript support
  • • Access to Ethereum testnet

Learning Path & Certification

Follow our structured learning path to master Web3.js development. Complete projects and assessments to earn your Web3 Developer certification.

1

Fundamentals

Learn the basics

2

Practice

Build projects

3

Advanced

Master techniques

Certified

Get certified