Bitcoin is a decentralized, digital currency that runs on a blockchain. A blockchain is like an open ledger that is verified by users all over the web. When a bitcoin is sent or received, it is processed by miners world-wide. miners operate specialized machinery that supports the Bitcoin network. A small fee is charged for this processing of transactions.
As the popularity of Bitcoin grows, so does the price. What makes the price of Bitcoin grow is the fact that there is a limited supply of bitcoins, 21 million in total. And no new Bitcoins will be created beyond this. Not all Bitcoins have yet been mined, so mining is still a very profitable activity.
If you would like to buy Bitcoin the best way is to register with an exchange. Unfortunately, not all exchanges are created equal. If you are wanting to buy Bitcoin with a credit card click here.