What is a Bitcoin?
Bitcoin is an open source digital currency based on a peer-to-peer. The network consists of users like you and requires no intermediaries between you and which you operate. This decentralization is the basis of safety and freedom of Bitcoin. Each transaction is validated by the miners, so there is no feasible way to hack. It is safer than banc account, just keep an eye on your wallet.
You want more? Start mining! This is the process to generate Bitcoins by adding transaction records to the network.
You can mine alone, but it's very recommended to do it in a collective pool. Read more.