Well,it goes like this...you bet for example 100$ on some coin if it is going up(long) or down(short).and then you choose your margin up to 125x.the meaning of that is...if you use your 100$ and 10x margin your profit will be depending on the market move but as if you invested 1000$..aaand ofcourse so will your losses.so,if you invest 100$ at 20x and the coin dumps 5% you lose everything (get liquidated),but if it goes up 5% you double your investment.i sometimes "play" with 10$ just for fun.you can setup take profit and stop losses normally.but,PLEASE,this is not any kind of advice,only explanation.if i had to say anything i would say dont do it.