Bitcoin is a cryptocurrency, which is a form of digital money. It is peer-to-peer decentralized, meaning that no one controls it. Anyone can use Bitcoin because it is an open system without borders.
Bitcoin is transferred directly from person to person without intermediaries, making it uncensorable. No one can prevent you from making a Bitcoin transaction.
Bitcoin is also deflationary, meaning that it’s final supply is fixed. There will never be more than 21 million Bitcoin in circulation. This is a guaranteed property of the system, enforced by all of the nodes that make up the network. This means that, while no one can guarantee that Bitcoin’s value will remain constant, it will never decrease because of (hyper)inflation.
Bitcoin can be used internationally to pay for things in a fraction of the time that traditional financial systems would require, making it ideal for online commerce.