I just found PB's youtube channel a couple months ago which has encouraged me to stop fuckin about and actually learn the ways of the fretboard. I got my first guitar on my 14th birthday but I didn't know what an octave was or how to play anything beyond a power chord and basic basic open chords until last autumn and I'll be 18 in the summer.

I'm still on the one key (G) and have learnt the 5 position system on major, melodic and harmonic minor, should i try changing keys or work my way up through the 7, 12 and 14 position systems or perhaps I'm missing something?