I got this book a few months ago to learn how to monitor when I'm ovulating. I'd been taking BC for years and stopped when my husband left on a 15 month deployment in March 2008.
I started taking my temperature each morning and monitoring the cervical mucus.
This book has tons of great information teaching you how to learn about the natural rhythms of your body. I'm not doing the charting anymore (other than tracking my periods) b/c things are going that well with my husband since he's been back. Go figure
"It is only with the heart that one can see rightly; what is essential is invisible to the eye."
~ Antoine de Saint-Exupéry