Well with bass there aren't really chords....just one note at a time usually. I have seen some player do solos with some chordings in them but even then not to many. Its just 1 note at a time. You could get a basic fret map and be done with it. maybe get a bass basics book. That would probably have a map in it.

Oh and also the bass is the lower 4 strings of a guitar so if you know guitar you know basic bass. not that I would call myself a bass player being a guitarist but I have had to fill in on bass before...