I want to start day trading crypto but i have no idea on which exchange I should start on. Preferrably I want one with low transaction fees and a wide range of altcoins to choose from, I do no have much money to start out with.
I would say for newbie the best exchange that you can use is coinbase but only few coins are traded there. You can also try shapeshift.io.
But as others are talking about bittrex, this is the most popular one and has a lot of altcoins for you to choose. But there are now rules that you had to follow with the verification process.
You know what, there are too many of them you can see them here
https://coinmarketcap.com/exchanges/volume/24-hour/