Mommy22boys, I'm new to charting (this is my first cycle), but
www.fertilityfriend.com offers free courses (there are 20 short lessons) that teach you all about charting, and they even allow you to enter your basal body temperatures (your body's temperature at rest...in the morning before you do ANYthing else) and will help you interpret your data. Charting helps you to pinpoint your day of ovulation. The website caters to those who are TTC, but I suppose you could also use it as a birth control method by knowing which days to avoid BDing. There are lots of ladies on here who know much more about charting than I do, but here's a start
