I currently am working out of "Walking Jazz Lines For Bass" Mel Bay/Hungerford, and it is a great book, I learned to read out of it but I find that in normal reading out of it I don't go past the 5th fret. It has hands down taught me all the notes on the first 5 frets. I have been playing the written pieces out of it now between the 5th and 9th frets, to learn those frets and it is working but sometimes hard when I have to hit a low F# when I'm on the 8th fret somewhere, and come back and land properly without looking. Can anyone suggest a book like this that specifically the music notes target the section between the 8th fret and the 12th fret? And so on, and don't have you jumping around? I am not into silly methods of shortcuts to 'memorize' all the notes all of the fret-board, I believe that actual reading of notes and playing them teaches you just fine, but I want to stay in one particular section of the fret-board, to master it, then move on to a higher section, and when the time comes, then put it all together. Anyone got a good book that trains you like this?