What how do you apply scales to guitar?

Question

What how do you apply scales to guitar?

Answer 1

I suggest looking up the CAGED System.  It'll show you how chords interchange (using only 5 chord shapes) and what penatonic scale goes over each shape.  That way, no matter what chord your playing (for the most part) and no matter where on the neck you're at, you'll know which individual notes sound good over that chord.

Answer 2

The reason for scales is to train your ear to recognize note combinations and to play solos. ALL solos are centered around a scale or two.