for beginners
Bitcoin for beginners
You do not need to buy anything, install anything or create an account to begin. This page explains in plain language what bitcoin is, how it works and how people hold it safely. After that you can try it yourself in six simulations, with no real money involved.
What to understand first
Eight short lessons, in this order. Every lesson cites its sources so you can check everything yourself.
- 1The problem Bitcoin attempted to solveDigital cash faced a specific technical problem: preventing the same unit from being spent twice without a trusted intermediary. The 2008 whitepaper proposed a way to solve it.8m
- 2Peer-to-peer electronic cashThe subtitle of Bitcoin's whitepaper describes exactly what problem it solves: paying someone directly, online, without a trusted middleman.8m
- 3What is a satoshi?One bitcoin splits into 100,000,000 satoshis, the smallest unit, and often a clearer way to think about small amounts.6m
- 4Why 21 millionThe limit is not a slogan. It falls out of two constants: a starting subsidy of 50 BTC and a halving every 210,000 blocks.8m
- 5Bitcoin versus the broader crypto marketBitcoin is one specific network with fixed, hard-to-change rules; "crypto" is a broad label covering thousands of very different projects.8m
- 6A wallet holds keys, not coinsBitcoin never leaves the ledger. A wallet stores the private keys that prove which entries you are allowed to spend.8m
- 7Buying BitcoinExchanges, brokers and peer-to-peer trades each work differently. Identity checks, spreads and fees all affect what you actually end up with.8m
- 8Common scamsMost Bitcoin theft has nothing to do with breaking cryptography, it relies on tricking a person into handing over access willingly.8m
Learn by doing it yourself
In the Open Bitcoin Lab you rehearse the real steps on practice data. Nothing can be lost, because no real money is involved.
Wallet lab
Simulation on practice data, no real money.
Transaction builder
Simulation on practice data, no real money.
Proof of work
Simulation on practice data, no real money.
Node consensus
Simulation on practice data, no real money.
Halving & supply
Simulation on practice data, no real money.
Mempool & fees
Simulation on practice data, no real money.
Questions beginners ask
- What is bitcoin, in one sentence?
- Bitcoin is money that lives on a shared public ledger, kept honest by thousands of independent computers instead of one company or government.
- Do I have to buy a whole bitcoin?
- No. One bitcoin splits into 100,000,000 satoshis, so people work with tiny amounts. Learning first costs nothing at all.
- Is this a place to get price tips?
- No. There are no predictions, no trading advice and nothing to sell here. Every lesson explains how the system works and cites its sources.
- How long does it take?
- Most beginners read one short lesson a day. After about a week you can follow any Bitcoin conversation without nodding along.