leverage is the amount that you are given in terms of ration, its added to your account so that you can be able to takes bigger trades than you account can be able to support, there is leverage from 1:1 up to 1:2000, it all depends with the amount you are depositing, if its a lot you can choose not to use any leverage since you can trade entirely from your account size, the higher the leverage the higher the risk of gaining much or losing the same.