Lessons › Bitcoin basics
Bitcoin basics · Lesson 3 of 3
Buying and sending safely
You don't need a whole bitcoin. The smallest unit, a satoshi, is 0.00000001 BTC, so you can start with a small amount.
Most people buy on an exchange, then keep it there or move it to their own wallet.
Bitcoin payments can't be reversed. Always check the full address and the network before you press send, and try a small test amount first.
Key points
- You can buy a small fraction
- Payments are final — no undo
- Send a small test amount first
Education only, not financial advice. Crypto is risky — only use money you can afford to lose, and check it’s legal where you live.