This book clearly and accurately describes the natural changes that a woman's body goes through during her fertility cycle. In language that is easy to understand, the author (who is a nurse) describes each phase and its corresponding symptoms in clear, plain English.
While there is a lot of information, it is a thin book that is easily read in one sitting. I refer to it often and find more things explained to me each time I read it.
I have no doubt that after reading this book, I can confidently and accurately track my fertility, and I'm sure anyone else can, too. I bought this when I went off the pill, and no other book compares. It is a must-have for any woman of child-bearing years. I wish I would have known about this book before I messed up my body by being on the pill . . . it took MONTHS to get back on track. But this book was a Godsend in helping me to understand my body, which is the most important thing.