Topic 1 of 5
Solidity Basics
Solidity is a statically-typed language for writing Ethereum smart contracts. Key concepts: pragma version, contract keyword, state variables, functions, modifiers, and events.
Smart Contracts
Write and deploy smart contracts on Ethereum with Solidity. Ship your first contract on testnet.
Topic 2 of 5
ERC-20 & ERC-721 Tokens
ERC-20 defines a standard interface for fungible tokens (like USDC). ERC-721 defines non-fungible tokens (NFTs). Both use standard function signatures so wallets and dApps can interact with any compliant contract.
Topic 3 of 5
DeFi Concepts
DeFi protocols use smart contracts to recreate financial services: AMMs (Uniswap) replace order books with liquidity pools, lending protocols (AAVE) use collateral and interest rates, and yield farming compounds returns across protocols.
Topic 4 of 5
Contract Security
Common vulnerabilities: reentrancy attacks (always update state before external calls), integer overflow (use SafeMath or Solidity 0.8+), access control (use onlyOwner modifiers), and flash loan attacks.
Topic 5 of 5
Deploy on Testnet
Use Remix IDE or Hardhat to compile your contract. Deploy to Sepolia testnet using MetaMask with free test ETH from a faucet. Verify your contract on Etherscan to make the source code public.
Other Tracks
