I said I was going to post pictures of my library (coming up on 1200 books), and I finally got the time to do it! Note: I am running out of bookshelf space; not pictured are a box of larger books and a stack of ARCs I need to review.
All books are organized by genre, then size. :) I'm OCD about this.
The top three shelves are fantasy, the next realistic fiction, the bottom anything I don't know where else to put. The only gaps on this shelf are where books I've lent out to friends go, so it's about as packed as they get.
Thus demonstrating that I have completely run out of bookshelf space, this is my dollhouse. My mom, friends, and I all built it when I was ten and painted all ten rooms and three hallways. Good thing we never bothered to put the roof on. Now it contains (besides some typical dollhouse stuff) my science fiction and classic fantasy books. And a pile of missmatched socks and some calc homework.
Well, that's my library. 1200 books in one teenager's room.