Q: Getting a bass guitar, what should I do first, bass or guitar?
A: if you are playing only that instrument alone, then your best bet is to try to do something like a guitar, but that might be a bit strange and you'll have to play at the highest reaches of the instrument. to get the most out of the instrument, i recommend playing it in a group setting with other 'treble' instruments, or you can put on recordings of your favorite songs and kill the bass frequencies in the EQ of the recording, and then you've got yourself a free play-along record