Hey, I've been playing guitar for over five years, mostly reading tabs and playing songs. But now I want to transition into writing my own music but I lack the understanding of guitar theory to be able to do this. I understand there are different keys such as the key of C and there are 7 chords in each key. 3 majors, 3 minors, and a diminished.

What I don't understand is be able to take these chords in a key and put them for instance into power chords for a pop-punk song, or putting them into a different tuning such as drop C or Drop B. Thanks in advanced