In this online industry there are lots of platform for start trading. If you want to start cryptocurrency trading so you can use bittrex and binance because both are very trusted platform for cryptocurrency trading. If you want to start binary trading so you can choose IQ option because it is a most popular and very trusted binary trading platform. Before I work in this platform but at the moment I work full time in cryptocurrency trading platform. I am use bittrex and binance and I suggest for everyone to use this platform.