Thanks everyone for all the good tips !
I've writed everything in my notes and will try to go through each method before choosing which one is the best for me
I've started do some puzzles yesterday and now on, i will review each of my games ^^
I've started "Chess fundamentals" (algebraic version) as well
Hi! Instead of suggesting one specific book,what really helped me improving my chess in +200 fide rating points in one year was the algorithm method. Sadly there is not so many reasources about it, only little fragments in many books, nothing complete, but I´m always explaining it to my students and getting good results with it. It sounds complex, but really isnt, it´s more a way of thinking, which is basic in chess and most players (including me) usually forget about when starting. Please feel free to write if you have any questions.