so simply, rule nº1: buy low, Sell High
rule nº2: follow rule nº1

as simply as that.
you have a plenty of altcoins to choose to trade with it, do some research and try to be successful in your decision, that's all

also there is lot of people using bots, those bots made the trade more faster and precise, ofc those bots cost money or if you are smart enough you can build your own one