In the same way all transactions made with Bitcoin are recorded in a public digital account called Bitcoin blockchain. All types of bitcoin transactions are recorded in Public Blockchain and the process of keeping this blockchain updated and safe is called bitcoin mining. The trained and experienced people of software fields, called bitcoin miners, keep this blockchain updated and secure, in return for which they have some bitcoin. In this way bitcoin technology works automatically without any controling authority.
The number of total bitcoin created in the world is already fixed and will not become bitcoin more. People who are currently bitecoin around the world do different types of transactions and some new bitcoins are created which blockchain people get updates and bitcoin miners.