IDPA is at Freeport the first sunday of every month. Show up around 7am. Bring your pistol liscence, a normal (none of this shoulder rig bullshit) belt holster and at least two mag carriers and 100-150 rounds of ammo for your piece.
Tell Mike, the guy who takes your money that you are new and they will take care of you.
DO NOT BRING A LOADED WEAPON! Put everything in a shooting bag and walk into the club house.
It is an IDPA 'Style' match, meaning very relaxed rules so everyone can have a good time.
The matches normally cost about $10 and last until 11 or 12 depending on the number of shooters.
Generally, these matches do not require the shooter to draw from concelment for saftey reasons (would you want some 300lb banana who you never saw before trying to whip his custom 1911 out from his houla shorts).
IPSC is a blast as well. There is a match this sunday at 7 or 8, I would recommend you go, you will enjoy it. The week after, there is an IPSC match at the pine barrens, starts at 10, 4 stages.
Keep in mind, unlike many other competeitive shooting sports, all of which I have done, IPSC seems to be one of the most welcoming to newcomers.