Web3 Fundamentals
Understand Web3 from scratch. No prior knowledge needed.
15 lessons
What is Web3?
What Web3 actually is, how it differs from Web2, and the four building blocks behind every crypto application.
How the Internet Evolved
Changes in web publishing, platform accounts, and blockchain applications, with a timeline.
How Blockchains Work
Blocks, hashes, nodes, and consensus - how blockchains actually work, explained with diagrams.
Ethereum: The World Computer
Why Ethereum matters, how the EVM works, and why most Web3 apps are built on it.
Wallets and Private Keys
How wallets work, what private keys are, and how to keep your crypto safe.
Making Your First Transaction
Step-by-step guide to set up MetaMask, get test ETH, and send your first on-chain transaction.
What Are Tokens?
ETH, stablecoins, governance tokens, and utility tokens - what they are and how they work.
Stablecoins: Digital Dollars
How USDC, USDT, and DAI maintain their $1 peg and why they matter for Web3.
Smart Contracts Explained
What smart contracts are, how they work, and real examples you can understand.
Gas Fees: Why They Exist
How gas fees work on Ethereum, why they spike, and how to pay less.
Layer 2: Making Blockchains Fast
How rollups and L2 networks solve Ethereum's speed and cost problems.
NFTs: Digital Ownership
What NFTs actually are, the standards behind them, and real use cases beyond art.
DAOs: Internet Organizations
How decentralized autonomous organizations work, vote, and manage money.
DeFi: Banking Without Banks
A complete overview of decentralized finance: DEXs, lending, yield, and how it all fits together.
Web3 Safety
How to protect yourself from scams, phishing, and rug pulls in Web3.