Bitcoin is a type of cryptocurrency, operating independently of a central bank. It is also a payment system that is peer-to-peer and transactions take place between users directly, without a mediator.
It was invented by Satoshi Nakamoto. He published the invention in 2008 and released it as open-source software the following year.
This currency is decentralized, which means that no one controls it. Bitcoins are not physical entities and are produced by people who use computers to solve mathematical problems (mining).
Anyone can have as many bitcoin addresses as they want. They are not linked to any user information although the system is transparent and has a record of every single transaction that has happened in the network.
Bitcoin faucets are reward systems, that give away rewards in the form of satoshis (1 satoshi = 0.00000001 BTC), for visitors to claim in exchange for completing tasks. The most common one being solving a captcha.
The bitcoin network collects all of the transactions into a block. The next process is solving it with a software by people, called "miners". They confirm those transactions, and write them into a general ledger. As a reward they get paid in BTC.
Once you sent bitcoins it is irrevirsible! The only way is by getting them back from the person who received them.
The system is fast, secure and cheap to use. The most common ways of getting Bitcoins are from a faucet, by exchanging or by receiving from someone. You can use a digital wallet to store your Bitcoins.