This coin has been in the news a lot and is one of the top coins on Coin Market Cap. The ripple network is a centralized one, which is probably going to have lots of its own upsides to it as well. It could be the top centralized crypto out there.
Anyway, it you are looking to trade ripple its available to trade on a bunch of exchanges, however many of them are not accept new users at the moment. So here is a crypto currency exchange that is open for new users and has Ripple (XRP) trading available: