The whole fact about it all, is that everything we do concerns or requires a certain level of knowledge, it could aswell be that little which is rightly appropriate for a beginner, now going further the rest of knowledge goes with one's ability to remain consistent in the market. I think most especially the new investors are likely to make the right choices for themselves on how they understand even slightly on how the market operates, it could be on how much they choose to invest, when and what strategies to be implemented without having to blindly follow whatever they feel could be it, whereas we know that little mistake that could be made and it turns out to become a huge loss.
The only level of knowledge that is required here as an investor to start your Bitcoin journey is storage, security, risk and tolerance which in general are the process of starting an investment. When you eventually buy a little then you will understand that the rue knowledge comes when you have already get your investment kicking. Along the line you will understand what i mean. The good news is that there is a ton of information's out here for Bitcoin beginners. A lot of learning resources, articles and even here in this very forum can equip you with several knowledge from different enthusiast so that you can choose to make informed decisions from their opinions.
You have forgotten to add the knowledge of how to buy from exchanges be it Dex or cex. This is also one of the basic knowledge that a new investor need to know because you will need to know how to deposit and convert your local currency into usdt in exchanges or how to buy from P2P in exchanges. Everything else you said above is valid, as I was reading through your post I just saw that you didn't cover this aspect. Buying bitcoin for the first time is a very delicate something and someone who is new really have to get the basic knowledge of how to navigate the exchanges to make his first buy. As it is not advisable to be buying through a third party, so a new investor should have the knowledge of how to use the exchanges.