Getting Started

This page answers "where do I start?" Three courses, organized by goal. Read them in order or not — or just browse all 31 topics.

1.Start here — the big picture

What Bitcoin is, why it exists, and the one thing to understand first: lost bitcoin cannot be recovered.

3 articles · ~25 min total

  1. 1History of Bitcoin7 min
  2. 2How Blockchain Works6 min
  3. 3Why Lost Bitcoin Cannot Be Recovered — Irreversibility Explained12 min

2.Understand how it works

From the whitepaper to mining, halvings, supply, transactions and economics — Bitcoin as a system.

6 articles · ~37 min total

  1. 1The Bitcoin Whitepaper, Section by Section20 min
  2. 2How Mining Works4 min
  3. 3What is the Halving?4 min
  4. 4Bitcoin's Controlled Supply3 min
  5. 5Transactions Deep Dive3 min
  6. 6Bitcoin Economics3 min

3.Use it, protect it, know the rules

Acquiring, custody, scam self-defense, payments, taxes and inheritance — the practical layer for Japan.

6 articles · ~82 min total

  1. 1Acquiring and Disposing of Bitcoin — How It Works, Neutrally16 min
  2. 2Wallets & Security3 min
  3. 3Bitcoin Scams — Tactics and How to Protect Yourself15 min
  4. 4Paying with Bitcoin — The State of Payments17 min
  5. 5Bitcoin Taxes in Japan — Misc Income, the 2026 Reform, and Tax Filing15 min
  6. 6Bitcoin Inheritance and Estate Planning16 min
Browse all 31 topics →View the timeline →