There's a link to an AA pamphlet on your first meeting. I don't know where it is, but you can always do a search on it. I found this: ►►
video.about.com/.../What-to-Expect-at-AA-Meetings.h...
(I don't know how this link will appear, but the search I did was: aa your first meeting)
It's always good to read the book Alcoholics Anonymous before your first meeting. It's online. The NA book may not be available online anymore, but can be purchased at a meeting or they may give you one.
Best Wishes!