[slavemason]

I've got that book also; I cut the bass out of the poster and hung it on the wall.
I have to agree with Bobo about the BASS GRIMOIRE. It explained why a minor is a minor, something the other books never managed to sink in with me. They break down the scales step by step and show you how to play those scales in any position you want. I haven't found anything to beat it yet. Then again, it was the last instructional book I ever bought.
Just keep playing and experimenting with different techniques.