There are no complex things to know before investing in bitcoin.First you should kmow that we have to buy bitcioin when the price of bitcoin decreases and should sell them at a good profit.These things are enough before investing in bitcoin.
In investing you need to know the things that involves investing like the risks you could encounter while in the process. Like when you lose the money you invested what will you do you need to have a back up plan so you wouldn't be regretting everything till the end