Hope this has not been posted before, if so I'm truly sorry.

I own a 2007 V6 3.8 Pontiac Grand Prix, and recently I jacked up the front of the car and noticed the passenger side wheel moves left and right when I grab it with my hands and wiggle it. I am not able to do it on the other side, and I have also noticed a noise coming from that specific location. It sounds like as the wheel spins around (as I drive) it rubs against something. I will be taking it to the mechanic this weekend, but if anyone can steer me in the right direction maybe I can save a buck and try taking care of the problem myself. The question is where do I start, and what do I need to look out for to determine the issue? Any help would do. Other than that, the car is running great in all other aspects.