Digital skills · Beginner

Blockchain & Web3 basics

Understand wallets, tokens and smart contracts — and avoid scams.

1. Lesson 1 · 20 min

   Step 1: What blockchain is

   • A shared record that many computers keep in sync.

2. Lesson 2 · 20 min

   Step 2: Wallets & keys

   • Your recovery phrase is your money — never share it.

3. Lesson 3 · 25 min

   Step 3: Smart contracts

   • Programs on the blockchain; Solidity is the common language.

4. Lesson 4 · 20 min

   Step 4: Spotting scams

   • Guaranteed returns and pressure to invest fast are red flags.