Learn Ethereum

Master Ethereum, one concept at a time

From your first wallet to shipping upgradeable protocols — a curriculum written by working Ethereum developers.

Beginner

5 articles

What is Ethereum?

Beginner · 9 min read

Wallets, seed phrases, and safety

Beginner · 10 min read

Gas, fees, and MEV in plain English

Beginner · 10 min read

Reading Etherscan like a pro

Beginner · 8 min read

Understanding transactions and nonces

Beginner · 8 min read

Intermediate

5 articles

ERC20 vs ERC721 vs ERC1155

Intermediate · 13 min read

Approvals, allowances, and safe transfers

Intermediate · 11 min read

Events, logs, and indexing

Intermediate · 11 min read

Reading Solidity contracts

Intermediate · 12 min read

Meta-transactions and permit()

Intermediate · 11 min read

Advanced

5 articles

Upgradeable proxies (Transparent vs UUPS)

Advanced · 18 min read

Storage layout and collision safety

Advanced · 16 min read

Reentrancy and checks-effects-interactions

Advanced · 14 min read

Assembly and gas golfing

Advanced · 17 min read

Account abstraction (ERC-4337)

Advanced · 18 min read