-1 to bass grimiore. It contains ONLY a bunch scale diagrams, and very little info about why or in what common circumstances you might want to use one scale vs another, nothing about chords or progressions as I recall.
1000 times more useful is to learn the theory behind the construction of scales, modes and chords and how they interrelate., and work it out on the fret board on your own. Then you can figure it out instead of looking it up.
Marc Sabatella's Primer is a great resource. Studybass.com also has useful info.