Creighton Method Book?

[barefeet]

I would like to learn the Creighton Method since I'm BF right now and don't think the sympto-thermal thing will work so great for us at the moment. I know that you are supposed to take a class to learn the Creighton Method, but we just don't have the money for it right now. Do any of you know if there's a book that I can get from the library or some other way to learn this method? Thanks in advance for any ideas!