What trading software are you using? Why?
I'm a big fan of Tradingview: solid data feeds, all the major BTC/futures markets and the most liquid altcoin markets (like Binance, Bitfinex Polo, Bittrex), lots of good free indicators and a couple good paid suites. I've been an everyday user since 2013. A Pro account is pretty cheap and is worth it just for the volume profile indicator. The free version is very good but will limit the number of indicators on each chart and the number of charts you can save.
If you want access to smaller altcoins and data feeds for smaller altcoin exchanges (like Kucoin, CEX.IO, Bluetrade) you probably need to use Coinigy. It has an extremely similar interface and indicator library to Tradingview. The free version, like Tradingview, limits the number of charts you can save.