I know its the original district, but I still call it "Tempe Marketplace North". ;)
Like Tempe Marketplace, Desert Ridge has a middle area w/ stores, restaurants, a movie theater, etc. The parking lot is surrounded by other big name stores (Petsmart, Target, Ross, etc) w/ a couple restaurants thrown in.
They really do have something for everyone/ a little bit of everything here. Dont feel overwhelmed, its not necessary to visit *every* place here, but w/in a few visits youll probably have it down.