As much as you can you must study first abut in trading even it is only a basic things that's the best thing you could do. Though, it is not also prohibited for the newbies to do trade at once as long as you have an idea about in doing trade. Like signing up first in Kucoin, binance or bittrex.
I think that it is bittrex is a very good trade exchange for beginners. The fact is that this site has a very well thought out security system and no user will worry about saving their coins.