At August 8, 2017 Bitcoin forked. Now there are two "bitcoins" but just one is what Bitcoin used to be (Bitcoin Cash aka BCH) while the other one is just digital lead (Bitcoin Core aka BTC).
https://pbs.twimg.com/media/DUFHqE5UMAAfVFb.png
https://pbs.twimg.com/media/DUZ3UceV4AAbP3_.jpg
reddit.com/r/btc
If you want to learn more about Bitcoin just follow @Bitcoin on twitter
if you want to buy any coin what ever they maybe my advice is first research ask questions in forms like this then research https://pbs.twimg.com/media/DUFHqE5UMAAfVFb.png
https://pbs.twimg.com/media/DUZ3UceV4AAbP3_.jpg
reddit.com/r/btc
If you want to learn more about Bitcoin just follow @Bitcoin on twitter