Anybody familiar with Bitcoin cash?

How can I buy and use it?
My book recently started accepting it and is giving a bonus if I use it to deposit.
Thanks

bitcoin cash or bitcoin?

Bitcoin cash, the new split off of bitcoin. I already have and use regular Bitcoin through coinbase, but Bitcoin cash isn't supported there yet

yeah i know a good amount of cryptocurrencies 

I just want to take advantage of the bonus if I deposit with Bitcoin cash, I'll probably just use it once but is there an app like coinbase that supports it.

I'm not a crypto master so there's probably better advice. . .but can go $>BTC using coinbase and then transfer to bittrex exchange for BTC>BCH and then transfer BCH to your book. . .maybe use a different wallet in between and especially if going from book to coinbase as I've heard coinbase can be a PITA if they find you're sending to them from a gambling site