Like the others said, show up after 7:00 (I think it officially starts at 7:30) with your money, $10.88 after tax, and proceed to the training bay which is the rightmost bay. You need eyes, ears, rifle, pistol (can be rented or borrowed, if necessary), and bring at least 50rds rifle, 20rds pistol, 2 rifle mags, and one pistol mag. You don't need BDU's, tac-gear, or gas mask and you will be accommodated if you don't have a sling or holster.
The easiest way to describe the league is IPSC/IDPA with long guns. We run a single course every Friday and everyone gets to go at least twice, first is usually full light and the other is low light.
Oh, you may want to consider both plugs and muffs because we have one truely sick and twisted individual who likes to use his AR10 carbine! <shudder>