I've been playing guitar for about 2 years or so, on and off. I want to play another instrument so i figure bass would be the easiest to play as I already play guitar.
I played guitar for twenty years, and a couple years ago I wanted to try my hand at bass as well. The only thing I could carry over from guitar to bass was the knowledge of the positions and notes on the fretboard. That's it. From what little I've learned so far, I find the bass "guitar" is a whole 'nother mindset from six-string guitar playing. Read the advice you received in this thread, it's good. The bonus is, you got a little history lesson too!
I wish you luck my friend.