So i've just been looking up tabs and learning them for six years now. And not continously, it's kinda just been a slight hobby. Buy for a long time i've really wanted to get into guitar much more seriously. I don't know very many of the basic chords, i dont know the first thing about theory, honestly i couldnt even tell you which string is which, yet i am easily an intermediate player, if not a hop or a skip from the next level. So whats the best way for me to fill in the missing parts?