Congrats! I've been a guitar player for 20 years now, but a couple years ago decided to switch to bass. I bought a Fender American Jazz and did my best Geddy Lee impression. Had a ton of fun and still regret selling that bass...

My massive callouses are gone (played DR Lo-Riders stainless steel strings), but I have TONS more respect for bass players because of that! It's such an important instrument, yet so under-appreciated! Keep it up, and mix it up playing with both your fingers and a pick (I preferred finger-style, but some stuff, like Jane's Addiction, just didn't sound right without a pick.)

Not sure what you listen to, but a lot of the older prog-rock stuff (Rush, Yes, even Pink Floyd) is a great way to expand the standard 4/4 bass stuff that most people think about. Learn "Money" note-for-note, and I can guarantee you'll be a better player (it's got a great bassline, and it also switches time signatures, from 7/8 to 4/4 and back.) Yes's "Roundabout" and Rush's "YYZ" also really pushed me.