The working bassist's tool kit

Building Walking Bass Lines

Hal Leonard Bass Method Book 1 - Deluxe Beginner Edition with Access to Audio Examples and Video Lessons Online by Ed Friedland

Rock Bass 101

RandB Bass Masters

Blues Bass - A Guide to the Essential Styles and Techniques

Hal Leonard Bass Method Beginner's Pack

Bass Grooves

Building Rock Bass Lines

Jazz Bass

Bass Improvisation