I have tought myself the entire key of G & E thru the full neck (Gutiar). But I am finding it overwelming to move on to the other keys, to much memorizing! G & E no problem, they are so simular, and not so bad with C it is close, but I cant help thinking there has got to be some way to memorize Key changes easily without basicly teaching yourself the patterns of each key indiviually and memorizing the volumes of data,(My memorys not what it use to be). I know each key pattern moves thru out the neck a half step, but over the entire neck from one key far offset from another I cant find an easy system of memorizing. I am thinking the marked frets hold some kind of common way to refer from one key to an other, and there is a trick to it I dont know yet, and I sure dont want to try and learn the most common keys individually, thru out the neck, thats alot of memorizing! I hope someone out there knows the trick, and can inlighten me.( pardon my ignorance )