It is very easy on the paper, in real life, as you can not predict the future and price can go wildly in one direction, you can not know the "right" entry/exit point.
So, if you really want to trade, there are lots of books that you can learn from. Do so before you put any serious money in it.
Volatility is the greatest challenge in crypto world and on this case we have to be gumptious and a wise decision-maker. As a trader I have to be obligated and committed in monitoring market condition, asking experts, and check occasionally of the system performance. As much as possible I'm gonna hold my bitcoin while waiting for its increase in value.