I'm already familiar with coinbase and Gdax but they only cover four coins at the moment.
What is a good exchange where I could buy and sell alt coins like Ripple, Dash, Monero, and Cardano?
Ideally, the fees will be zero or very low. Obviously I want something secure as well.
There are many great trusted exchange and popular to use like us Poloniex and the best to be used for me is Bittrex.
I currently used Bittrex and it is good to use.