With NFP you are assigned a Nurse Practitioner to teach you all the ins and outs of the method and charting. You meet with her 8 times over the course of the year so she can view your progress with the method.
Our practitioner was Jana. She is the most experienced in the area. Our first meeting was simply to see how we were doing with charting after our initial introduction. I had one fertile day and the rest are what you call dry days, or days of infertility. In the back of the book the give several examples of charts. By charting they can determine the exact issue that you are having within your cycle. They use samples of what some of these issues look like. My chart was beginning to look like the chart for infertility, but I didn't want to come to any conclusions yet, it was only the first meeting. It was time to wait it out and keep charting.