I feel like most beginners will learn from their mistakes by doing them, that is going to be the case for most of them, not going to be amazing or anything to do so, but it is going to be the reality and there is really nothing to do about it. If they make a mistake and learn from it, they will become better, if they learn nothing from the mistake then they are not going to be great at it and that is going to be a trouble.
Think of it like it is a boring approach, like if you could end up with learning by making a mistake, that is a terrible thing because you lost, but next time you will be better and make a profit thanks to that loss. This is why reading these will not be that easy to solve beginner issues, they have to do them personally and learn from them over time as well.
Most beginners are wrong in setting their own mindset, they are always trapped in greed and think that they will get a lot of money from trading. Without them knowing all the risks they will face, they can start it but not many of them are able to live it well. To get a solution to their problem, at least they have to experience mistakes first or make other people's mistakes as reference material so that they never reach them. They have a lot of things to prepare for, they can't be careless if they don't want to lose a lot of money.