Courses by topic

Web3

  1. Beginner · 4 minWhat is Web3?Own, sign and exchange across open networks.
  2. Beginner · 3 minThe blockchainA public ledger no one controls alone.
  3. Beginner · 4 minThe hot walletYour phone becomes a keychain — the magic and the traps.
  4. Beginner · 4 minWhat does a smart contract do?Public code that executes the rules of an application.
  5. Beginner · 3 minWhy do transactions cost gas?Understand transaction pricing and choose the right time.
  6. Beginner · 4 minToken, coin or NFT?What these digital objects represent — and what they do not prove.
  7. Beginner · 4 minStablecoinsThe dollar that lives on-chain — the crypto everyone uses without knowing.
  8. Intermediate · 4 minDEXsTrading without a middleman, right on the chain.
  9. Intermediate · 4 minWhat are layers and bridges for?Move between networks without confusing speed, security and liquidity.
  10. Beginner · 5 minHow do you avoid Web3 scams?Fake sites, blind signatures and approvals you should revoke.