hi everyone, I have some newbie charting questions

I caved and decided to go the "au plan-urale" route than the "au naturale" when TTC. hehe...
1) is there a baseline temp when doing morning readings? monday's reading was 96.57 (but I didn't have 3 hours sleep).
2) I started my FF chart, so was wondering why would someone want to see it or be a chart stalker? haha, I guess I'm wondering since I still don't understand how to read it myself.
3) if I'm a little early or a little late in taking temp, is that ok? is there a window? I know, closest is best, but I usually don't wake up @ the same time everyday. I'm trying to shoot for 7am.
thanks everyone in advance!