Remember it's far more important to keep the timing tight than to play every note in the original song. To start with, keep it simple but tight with the drummer. Consider leaving out fills etc while you work on learning to follow the drums.
Playing in a band isn't for everyone, it wasn't for me. You need to be totally committed. You can't skip practice to do something else and you have to make yourself available for gigs. Everyone in the band relies on everyone else being there.
Get some decent earplugs, you'll spend a lot of time very close to a drum kit and something to take the edge off will make it much more comfortable.
Final tip. Forget about YOUR tone. You need a tone which cuts through the mix and compliments it. My bass tone with a metal band was really horrible in isolation but what you'd hear with the guitar sounded perfect.