Welcome,
I would like to recommend you a very nice stock exchange. I admit that the opportunities it offers outweigh all the others ... even Bittrex.
Trading strategies are really limitless. You can play both leverage 1: 100 or simply hold BTC in the long term.
Link to the stock exchange: https://www.bitmex.com/register/rxPKdO
P.S. I highly recommend registering from my link, thanks to which you will receive a 10% discount on the payment for 6 months.
