If you don't understand bitcoin you will panic and sell in looses. before investing in bitcoin it is very essential to take your time to understand the risks involved, underlying technology and market dynamics, by understanding this three factors you will invest in bitcoin without fear and panic, because fear and panic has hindered many investors from making good profits from bitcoin.
You don't really need to understand all this before investing in Bitcoin, if you're not technical enough, you might spend a relatively longer time trying to understand the technology behind Bitcoin and it would lead to unnecessary time wastage and resulting decision fatigue that may see you not investing after taking such a long time understanding what is not your field. You need to know of the valuable nature of Bitcoin and it's being a valid and profitable investment option.
You can also verify with historic data of it's price appreciation and validate whether it's a good investment option. Another important knowledge is it's volatility so you don't get discouraged when the price swings, but with a long-term investment plan, you can learn to focus more on accumulating as much Bitcoin as possible while learning more about more about Bitcoin as you advance in your accumulation journey.