My question is when should I try the things I picked up from these forums and books?
Should I first read all the books take notes and learn about the different techniques and then
enter the field?

you dont,this will only get you stuck in your head when you know too much theory,but not enough practice.
do both,educate and approach,pick one thing you want to learn and repeat until done

I don't know how the begin that's what I'm trying to say, after a few days of research I gained
a ton of knowledge but not enough to feel confident to test it out.

you wont feel confident from reading,but from taking action

you want a good book,read models

ok,reccomendation?