Ok I have a couple questions 1. when reading music how do you know what string to play on and where to go on the fretboard ? 2. I have this book called Mel Bay's Complete Book Of Bass Essentials , in this it shows : For 5-string Basses Only C Major Positions #1 THE TONIC BEING ON THE A STRING -1st Position : C Ionian and B Locrian going down to G Mixolydian and D Dorian. -2nd Position : D Dorian going down to A Aeolian, E Phrygian and F Lydian. -3rd Position : E Phrygian and F Lydian going down to B Locrian, C Ionian and G Mixolydian. -4th Position : G Mixolydian going down to D Dorian and A Aeolian. -5th Postion : A Aeolian going down to E Phrygian, F Lydian, B Locrian and C Ionian. What exactly does that all mean ? that should do it for now but I have a lot more questions. thanks.