i wanna make 2007 my most useful year to boost on my guitar playing skills so i dont know if i should take time to learn solo's from metallica and such bands slowly then slowly progress faster or sure i learn riffs?
Certainly, learn both solos and riffs, but it also helps to do boring things like scales(yawn!)and excercises.

BTW Metallica is very good for that sort of thing
Just sort your theory knowledge out - you don't need to know all the modes or the pitch axis theory, just learn the major scale, how to form chords and where the notes are on the fretboard...that's plenty to keep you going.
Actually called Mark!

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