STAGE 2 · UNDERSTAND BITCOINLEVEL · Beginner7 LESSONSABOUT 21 MINBITCOIN FUNDAMENTALS
A fast, plain-language tour of Bitcoin for a complete beginner. Each lesson takes about three minutes and ends with one thing to remember. Nothing here is advice to buy or sell; it is here so you can decide for yourself.
BY THE END OF THIS COURSE YOU WILL BE ABLE TO
- Say in one paragraph what Bitcoin is and what it is not
- Explain why nobody can create more than 21 million
- Describe what a private key is and why losing it is final
- Name the real risks before you buy anything
Every lesson ends with a quiz or a challenge; the course is complete when each lesson is.
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LESSONS
01Money is a promiseMoney works because people agree it will be accepted later. That shared trust is the whole trick.▶ 1✓ quiz3 MIN✓02When promises bendWhen more money can be created, each unit tends to buy a little less. This is what people mean by inflation.✓ quiz3 MIN✓03Enter BitcoinBitcoin is a digital money with a fixed supply that no company or government runs. It started with a nine-page paper.▶ 1✓ quiz▭ cards3 MIN✓04A ledger everyone checksTransactions are grouped into blocks and linked in a chain. Miners add blocks by doing real work, and nodes check every rule.▶ 1✓ quiz3 MIN✓0521 million and no moreNew bitcoin is issued on a schedule that halves about every four years, and stops near 21 million.✓ quiz⚡ challenge3 MIN✓06Owning itYou control bitcoin with a private key. Whoever holds the key controls the coins, which is powerful and unforgiving.✓ quiz▭ cards3 MIN✓07Using it, and the risksBitcoin can be sent to anyone and saved in small pieces, but the price is volatile and mistakes are usually permanent.▶ 1✓ quiz3 MIN✓