Never tried to trade with stock market but i think the different of trading with cryptocurrency is the movement of the price was fast than in stock market this is just base what i saw or experience that is why they are more people are trading with cryptocurrency because of the fast movement of the price..
But the problem right now i heard that ICo and altcoin are ban in china that causes the price of bitcoin down..

You can try to trade with CEX,io or go to https://coinmarketcap.com/ and choose what altcoin you want to trade and click market you can see almost list of exchange site. .