Mind's Eye Society is a nationwide fan club for White Wolf's games. Membership is not necessary to come check out a game or even to play for the first few months.
Six months ago they reset their chronicle so there are plenty of opportunities for new players to become a part of the ongoing story.
For your first session I suggest asking the storyteller for an NPC to play for the night, then join in the fun with a couple dozen other larpers and get a feel for how the game goes. All the rules can be explained as you go, as it is at its core a very simple system.
Be sure to arrive by 7pm (the earlier the better) let them know you're new and from the Austin RPG meetup,