I came across this website www.librarything.com. LibraryThing is an online service to help people catalog their books easily. It is great. I have so many books and each year I struggle with how to keep track of my books. This is a great place for me. It is free for the first 200 books that you catalog. After that there are different membership options. I like that I am able to locate just about any book I have. I haven't quite figured how I will use it in my classroom, but it certainly allows me to keep track of my books. It is also a great way to read book reviews and review books for authors.