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 every action you should have plan. Well you probably need to know that as an investor it is necessary to be risk taker where as you will accept every difficulties you may face along the journey, because everything happens in the crypto world are unpredictable so you need to be ready. You need also to consider the finances you have, the capability of own budget and such.