MTKA Game & Fish has historically done a new shooter orientation day for those folks that would like to give action shooting a try. Last time I helped out with it it was pretty neutral between USPSA and IDPA. You get a crash course on the rules for both sports and shoot a few simple stages in the afternoon while receiving some coaching.
I haven't heard a word on if they are going to do it this year, though.
You can shoot IDPA or USPSA several times a week from April to October and there is almost always a match on the weekends. It dwindles during the winter and some of it moves indoors but we do do some winter outdoor shoots, too.
Also, you do not need a fancy gun to shoot IPSC/USPSA. In fact, Production division is a very popluar division and the equipment rules are similar to IDPA rules.
By the way, you can't go wrong with a G17 for steel, IDPA, USPSA production, 3-gun, and GSSF. It works for all of them.