Hal Leonard All Scales In All Positions Guitar: constructing and playing guitar scales; This book gives you the tools to understand scales and to create any type of scale in any position; Topics: major and minor scales, pentatonics and blues scales, harmonic and melodic minor, whole tone, diminished and chromatic scales, visualizing scales, relationship between scales and chords; in standard notation and Tab; in English language
I was looking for a fairly simple resource to put scales together and use them for riffing. It's a little more detailed than I wanted and is going to require 'reading' rather than a mere glance. That said, it is a good book and the size and shape makes it easy to keep and carry.
this is a no brainer. just buy it. this is how you will learn to improvise! plus, a music teacher could not teach you this fast, save some cash, teach yourself! best book I have ever found for scale lessons.