Ok I get the part that power chords are a part of a full chord and uses the Major is it as its base note and i suppose the other note or two notes sofen the tone or harmonises it... im speaking in the languge of novice lol sorry it just overwhelming my mind wants to take everything in but its getting full need to throw some things to the recycle bin in my head to make room....
If your Fingers aint bleading you havent practiced enough...