Like he said there are lots of people herping in az. Most of us don't let other people know about hot spots, and it is not safe at all to walk around in the desert with out a someone who has experience! There are many clubs that go out on events with great results.. we just don't want to be the one who told someone new to go look in a good place and find out later they died from a rattle snake bite or even worse got lost in the desert and ran out of water...
Try here. It's a great way to start and monthly meetings are held
http://www.azreptiles.com/