You can read books listen all the gurus, but it's nothing compared with your own experince.
Instead of reading the books or listening the gurus learn the basics and start action make some moves because you will need to be ready to make mistakes don't take this emotionally be with mindset that you gona have nice long 3 years of working with something make mistakes don't think about them too much just make notes what went wrong and move on dont make same mistake try new way.
At the end you will have a lot experince base to see what did worked and what did not worked out.
Theories from books could help you get started about trading but in the end if you want to be serious about trading then you will need lot of experiences to make something out of it. There are lot of situations where the book doesn't cover it at all and you have to encounter it by yourself and you have to know how to handle it, that's why trading is really difficult to master because so many different things are going on in just matter of seconds.
Don't be stucked with bad mood If you try something and it's not working you have to be mindset that you gona make 100 mistakes yes you will make it that's normal.
People who take failures too hard will just overstress themselfes and that's why they slow down their success.
Mistakes are just common things to face and sometimes you will feel down from it and that's pretty normal. The most important is how do you move on from that and analyze that problems so you won't make the same mistake.