Welcome to TarValon.net! As you can see, we're a friendly bunch, so don't hesitate to reach out with any questions you might have. As Jarl has pointed out, the Membership Manual is a great place to start, although I understand it can be a little daunting.
I'd suggest checking out the stickied posts at the top of this forum for learning how to become a Citizen (if you haven't already), and from there you can eventually move up through the ranks as a novice/recruit, Accepted/Soldier, and then finally an Aes Sedai/Gaidin.