What is bitcoin?
Bitcoin is a form of digital currency, created and held electronically. No one controls it. Bitcoins aren't printed, like dollars or euros - they're produced by people, and increasingly businesses, running computers all around the world, using software that solves mathematical problems.
Who created it?
It's the first example of a growing category of money known as cryptocurrency.
A software developer called Satoshi Nakamoto proposed bitcoin, which was an electronic payment system based on mathematical proof. The idea was to produce a currency independent of any central authority, transferable electronically, more or less instantly, with very low transaction fees.
Why would I use bitcoin?
Bitcoin allows you to instantly send any amount of money to anyone in the world without needing a bank. It allows you to access your money without needing an ATM or credit card - bitcoin gives you back control over your money. Plus you can pay friends back for dinner, buy your next computer, and donate to charity, all using bitcoin.