Oh hey. Welcome to the forum, and it turns out you put your intro thread in the right place! I'll give you a quick rundown:
Tea with Mr. Tumnus: Intros and welcoming.
The Lion, The Witch, and The Wardrode: Discussion of first and only movie.
Prince Caspian (2008): Discussion of upcoming Caspian film.
Cast and Crew Discussions: Behind the scenes stuff.
Hunt for the White Stag: Far-future film discussion.
BBC and Animated Narnia: Title says all. Discussion of other Narnia films.
The Gaming World of Narnia: Centaurs on xboxes
Discussion of games, board and video.
The Chronicles of Narnia: Book discussion.
CS Lewis: The author.
The Inklings: CS Lewis's writer group. Discussion of things like Tolkien.
The Wood between the Worlds: Other books, movies, games, etc.
Other Fantasy Worlds: Harry Potter, Eragon, and the like.
Christianity and Narnia: Discussion of various Narnia-related religion topics.
The Socratic Club: Philosophical stuff. Way too deep for me.
Prayer Requests: Things like new babies, dying grandmas, and car accidents.
The Lamp-post: General forum.
International Forum: Name says all.
The Professor's Writing Club: Fanfic and stories, poems, songs.
Brush of Unicorn and Hide of Bull: Art, banners and avatars.
The Dawn Treader: Text-based in-forum RPGing.
The Land of the Duffers: Randomness and pie(may pie live forever).