As a new investor I can say that if you want to hold bitcoins, you should hold bitcoin in DCA method.
As a new investor I don't think it requires much knowledge.
(Though the saying goes that knowledge is king)
But once you go to the market, you can learn all kinds of things by yourself.
In any field you want to get into for you to thrive as a newbie you have to brush yourself with as much knowledge as possible about such field before diving all in, especially in the basics of such field which bitcoin investment is not an exception. Before start you have to be knowledgeable about things like the investment strategy of your interest, risk management, market sentiments/psychology and with an investment plan (mainly a long term duration holding plan).
It is best to learn (equip yourself) before going into the market, instead of hoping to learning everything or the most important things about the market while in the market.
You are talking about trading and not investment. When you are investing in a long term investment, you can only learn how to buy and transfer bitcoin from the exchange and transfer to your self custody wallet. This is why you are to go into a long term investment to lower the risk attached to the volatile nature of bitcoin. At the same time you can be investing and also learn more on bitcoin based on your area of interest.
This is why the DCA method is more recommendable for beginners because they can start with little amount for the first one year and when they have learnt more and understand how bitcoin works, they can increase the amount that they were using for their regular DCA. You keep on learning about bitcoin even though you are an old G because there are always new development time to time for proper security of the network. So as long as you own a bitcoin investment learning is a continuous process. This why newbies don't need to learn much but get started as soon as they are can.