2,100,000,000,000,000 sats · no more, ever
Learn Bitcoin.
Hold your own keys.
Plain-English guides to self-custody and cold storage. We start with the free tools and only recommend gear when it's worth the money.
The path
- UnderstandWhat Bitcoin is, why the supply is fixed at 21 million, and what owning it actually means.
- PracticeRun the whole wallet process with free test coins before any real money is involved.
- BuildPick a cold storage kit that fits your budget, from free software to three-device multisig.
- ProtectBack up on steel, avoid the common mistakes, and leave a plan your family can follow.
Start here
- What Bitcoin is, and why 21 million matters7 min · Beginner
- Keys, seeds and self-custody8 min · Beginner
- Hot wallets vs cold storage6 min · Beginner
- Practice on signet before you use real bitcoin7 min · Beginner
- How to buy bitcoin and move it to your own wallet9 min · Beginner
Cold storage
- Four ways to build a cold wallet9 min · Beginner
- Cold storage without a hardware wallet9 min · Intermediate
- Build a SeedSigner10 min · Intermediate
- Choosing and preparing an air-gapped laptop9 min · Intermediate
- Hardware wallets compared8 min · Beginner
- Seed phrase backups: paper, steel and passphrases8 min · Beginner
- 2-of-3 multisig: the strongest self-custody setup10 min · Advanced
How we make money, and why it doesn't change the advice
Some gear links on this site are affiliate links. If you buy through one, we may earn a commission at no extra cost to you. We still put the free options first: Tails, Sparrow, SeedSigner and signet earn us nothing, and for a lot of people they're the right answer. Full disclosure.