illegal Pitch?

[bluecoach]

I am a new coach and a new umpire and feel that I should be teaching my girls by the correct rules.
I am confused as to illegal vs legal pitch.
1. Pitcher starts with her hands together above the head, breaks them, does a backwards swing and then proceeds into a forward windmill swing, is it illegal?
2. Pitcher starts with her hands together infront of the boddy, breaks them, does a backward swing and then proceeds into a forward windmill swing, is it illegal?
3. Pitcher starts with her hands above her head, breaks them, does a backwards swing and delivers pitch, no windmill, is this legal??
Thanks