Welcome aboard!
I started same age as you, and three years on am now tolerable, at least at playing the bass. I always recommend StudyBass.com. It's not shouty, is completely free, and makes sure you understand the basics, like how not to wreck your back and wrists, tuning and setup, and theory. Scotts Bass Lessons is excellent value for money as well, at about Β£80 per year I've kept my subscription running. He is a bit enthusiastic, so get going first, then take the free trial in a couple of months.
After that, play what you like, learn to play the bass you have and stay away from the marketplace! π