The essentials
Bitcoin is a public settlement network with no central operator. Participants validate transactions against shared rules, and miners compete to add blocks using proof of work. The supply schedule approaches a maximum of 21 million BTC.
What to consider
A wallet manages keys, not coins. Your balance is recorded on the ledger; a private key authorizes spending. Exchanges hold keys for custodial balances, while a self-custody wallet makes you responsible for backups.
Put it into practice
Before buying, understand volatility, transaction fees and custody. Start with an amount you can afford to lose, verify the receiving network and test a small transfer first.