Walking Bass Lines for Jazz Guitar by Stephan Badreau is a step-by-step guide to harmonizing bass lines on the guitar.
Book & CD.
The book will show you how to connect familiar chord shapes with the appropriate bass notes. It is full of ideas, examples, chord voicings and substitutions, as well as short chord progressions for you to try your new skills.
All examples are played on the accompanying CD at both slow and normal speed, as well as a drums-only version for play-along purposes.