You're not to young, I wish I had started at your age. The Glock 34 is a good place to start. I am also left handed and when I shot production I had a Blade Tech holster and it worked great. As far as getting involved go to the www.uspsa.com and do a search for clubs in your area they will have contact info and match schedules to help answer your questions. In no time you'll be hooked for life. Best of luck.