Crypto is very nascent and exchanges have a lot of catching up to do. On CryptoCompare.com you can create an account for free and create a portfolio(s). You may have to be on multiple exchanges depending on which coins you wish to buy.

I'm not sure if it would help you but I posted some info for beginning crypto traders @mikeflow

Link:https://steemit.com/cryptocurrency/@mikeflow/beginners-guide-to-cryptocurrencies-how-and-where-to-start-buying-and-trading