NFP: The Sinner's Guide to Natural Family Planning by Simcha Fisher

NFP works!  "Okay, this woman has five kids," you may say to yourself.  That's true, but I knew when I was going to have them!  I was also able to avoid pregnancy, calculate my fertile days, and determine when I was expecting before taking pregnancy tests!  NFP is amazing!

And so is Simcha Fisher's book, The Sinner's Guide to Natural Family Planning.  Funny, entertaining, and informative.  Good for a rookie to NFP or for the experienced practitioner.