I live in Tucson, AZ and I would like to get into shooting sports, whether it be pistol competition, rifle, 3-gun, or skeet/trap/sporting clays. Where do I start? I have heard terms like USPSA or IPSC but have no clue what the difference is. How often are these matches? I want to try it, but not join a club or anything like that. I also don't want to have to travel anywhere for it. So where do I start? I am quite interested in 3-gun! Sounds like a blast! Thanks!