Crypto for 10‑year‑olds
(but accurate)

No jargon flexing. Just the basics: what crypto is, what a wallet is, and how to not get wrecked.
Simple Practical Self-custody first
The one rule
Never share your seed phrase.
Not with friends. Not with support. Not with anyone. If someone asks, it’s a scam.
If you only remember one thing from this page, make it that.

1) What is crypto?

Imagine a big notebook that everyone can read. That notebook lists who owns what. The notebook is called a blockchain. Crypto coins are just numbers in that notebook.

2) What is a wallet?

A wallet app is like a keychain for the blockchain. It doesn’t “store coins” inside your phone. It stores the keys that let you control coins.

3) Seed phrase = master key

Your seed phrase (12/24 words) is the master key that can rebuild your wallet anywhere. If someone gets it, they can take your funds. There’s no “chargeback”.
Good: write it on paper, store it safely. Bad: screenshots, cloud notes, sending it in DMs.

4) Self-custody (why bother?)

If you keep crypto on an exchange, the exchange controls the keys. That’s convenient… until it isn’t. Self-custody means you control the keys.

5) Wallets (self-custody)

You said you prefer imToken, so it’s first:
Tip: Always download wallets from the official site/app store listing. Fake wallet apps exist.

6) Tiny checklist (don’t get scammed)

  • No one legit will DM you first to “help”.
  • Never type seed phrase into random websites.
  • Start with small amounts while learning.
  • If a link looks weird, don’t click it. Type the URL yourself.
  • Hardware wallets exist for bigger stacks (later).