You can first find a trading site you want. Options are Livecoin and bittrex this two site are the two I'm trading with.
Second, look at the interface and download what wallet is compatible with then watch videos about it so you can learn how it works.
Lastly, you can start trading. Happy trading
The better trading site for me is bittrex because you can find a lot of good coins their, they have a variety of coins to choose from
and that will not live your money hanging if you are a day trader. You can also start with a small amount but at least you are starting in one
of the best trading site in the crypto industry.