I don't know heaps, but started charting doing temps and ovulation sticks. Only started doing it the cycle we fell pregnant, which was only really our 2nd month trying. I used the countingdowntopregnancy website as I found it easier than the fetilityfriend one, but there's lots of useful information there. I will start charting again a couple of months before we want to try as last time my cycle went from being 28 days to 34 and I'd really like to know when I'm ovulating for sure.