You can find about it if you do a bit of research on Google, but here I go. I won't go into the specifics of Bitcoin because that will take too long, so i'm just going to skim over it. In a nutshell, Bitcoin is digital currency that uses blockchain technology as a ways of payment online. This is also called a cryptocurrency. Bitcoin is a decentralised exchange where no single person or power controls the currency. In bitcoin, there are the devs, which work together to implement updates to improve Bitcoin, the users, which hold Bitcoin and the miners which lend out part of their CPU in order to process transactions. Compare this with banks and the government, which can generate any amount of it's national currency at any time, and you can see why having a currency that no one controls is so innovative and exceptional. Bitcoin also uses blockchain technology, which is a digitised ledger made up of individual blocks. These blocks contain data of all the transactions that are processed by the miners and are uploaded onto the blockchain. On the blockchain, everyone and anyone can see every single transaction that has been made, making Bitcoin a very transparent currency compared to fiat. If you want to a more in depth and technical explanation of Bitcoin, try this youtube video
https://www.youtube.com/watch?v=Lx9zgZCMqXEHave fun!