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Independent Guidance • Plain-Language Security • We Never Ask for Your Passwords or Recovery Words
25th Word
Learning hub

Start here: two guided paths

Pick the path that fits you. Each one is a short, ordered reading list, and you can stop after any step and still be safer than when you started.

Everyday passwords

New to passwords

No technical knowledge needed. Read these in order, and try each step on your own accounts.

  1. 01What is a password, and why it mattersZero level
  2. 02How long should a password be?Zero level
  3. 03Password complexity: do symbols and numbers really help?Zero level
  4. 04Password strength explained in plain words (what "entropy" means)Zero level
  5. 05What makes a password weak: the patterns attackers try firstZero level
  6. 06Passwords vs passphrases: why a few random words beat P@ssw0rdZero level
  7. 07How to create a strong password you can rememberZero level
  8. 08Never reuse a password: what happens when one site leaksZero level
  9. 09Password managers explained for beginnersZero level
  10. 10Two-factor authentication (2FA) explainedZero level
  11. 11Which accounts need 2FA firstZero level
  12. 12How to secure your email account (checklist)Beginner
  13. 13From passwords to seed phrases: why crypto's "master password" is differentZero level
Crypto secrets

New to crypto

For anyone who owns, or is about to own, crypto. Read these before you move any money.

  1. 01From passwords to seed phrases: why crypto's "master password" is differentZero level
  2. 02Seed phrase vs private key vs public keyBeginner
  3. 0312 words or 24 words: does length matter?Beginner
  4. 04Do I need a hardware wallet?Beginner
  5. 05How to set up a hardware wallet safely (first-day checklist)Beginner
  6. 06How to write down a seed phrase correctly (step by step)Beginner
  7. 07Where to store a seed phrase: home, safe, deposit box comparedBeginner
  8. 08How to test your backup without exposing itIntermediate
  9. 09What happens if I lose my seed phraseBeginner
  10. 10Nobody legitimate will ever ask for your seed phraseBeginner
  11. 11Common seed phrase scams (fake support, fake apps, airdrops)Beginner
  12. 12What is the 25th word? The BIP39 passphrase explainedBeginner
  13. 13How to pass crypto to your family without exposing it todayBeginner