Hello Aron, welcome to AZ!
If you do a lot of in town riding, you will be a bit disappointed at first as the roads here are mostly straight and flat. I moved here from upstate NY and really missed the elevation changes and the winding roads. However, if you are willing to ride a little to get places, there are countless areas that are worth the ride. Prescott, Payson, Sedona, Mt Lemon, etc.
As for track days, I am a coach for Desert Road Racing. We average about 1 track day a month, minus the hot months, June, July and most of August. We go to Arizona Motorsports Park (AMP), Inde Motorsports Ranch (Wilcox, AZ) and a couple of tracks at Wildhorse Pass Raceway. Rumors are swirling that we may have a couple of new facilities in the near future. There is another group that does track days, but as far as I know, they only go to AMP. Plus it is just a bit of a drive to go to Chuckwalla, or Vegas. I am planning on doing a track day at COTA in Austin, as well.
There are several meetup groups online. One place most have in common is the Pavilions in Scottsdale. It takes place every Saturday night and will have a wide variety of bikes each week. A couple of guys and myself are there most weeks. There are some that only show up every so often, when their particular group/club is going or they just happen to go that week. You never know what may show up there each week!
Hope that answers your questions a little bit. Let me know if you have any others and I will be happy to help and look forward to meeting you.