Yes, they need some guide it could be learn by books or by videos in Youtube. Everything can be learn now in this space nothing is impossible. But yes developing your capital for your business or project is kinda hard if you are doing it just for yourself. I knew it because I have an experience in that kind of thing before but I fail because I didn't took the risk and I limit myself.
I would suggest a professional in this matter rather than one's own self if they lack suitable experience. You can't just develop your own capital from thin air. You have to grow your money from what you already have, take loans from the banks if necessary or planned and then go public is the situation demands it and you have a high demand on the market.
This we can start from smaller ventures first, gain popularity through marketing and actually developing some that is useful then go for higher capital. It's a ful time job and no compromise should be made.
Well someone who is already a professional may already have a lot of experience as a basis in himself, they already know the various conditions that are there and that they will experience, with that someone who already has experience will tend to be easier to do or live it. But honestly I think it doesn't matter if a beginner wants to try it, someone has to be willing to take risks if he or his knowledge wants to develop, and that will make them a professional in that field. But I also don't mean or wouldn't put too much pressure on them to do it, because obviously only they themselves know about what they want and what's best. So for them (beginners) I hope they look into the risks involved in the field they're going to do, don't be stupid, meaning don't just rely on courage but you don't have any knowledge.
I agree with what you mentioned above, there are already quite a lot of references that we can get to increase knowledge or insight, you can search from the internet or take special training that can be used for your basic knowledge before starting a business. What you have to have here is capital and also mentality, for capital as you said there are many banks that provide loans and for your own mentality please do as I explained above. Because it will be able to help you survive in this very tight business competition. That's right, start from a small business, if you see that the performance of the money you spin is good then you can do it with a larger capital from the spin results.