Good advice to a point obbay. But if Dad isn't farmiliar with what to look for a good video can help you avoid some of the more common pitfalls with teaching DD at the beginning.If she's 9 and she's literally just starting, you don't need a video yet. show her the foot placement and basic motion and give her a place she can practice. (Friend of mine hung a heavy blanket off the side of his garage and his daughter goes out and throws into that)
We hope to have the House of Pitching video series back in the store soon. Unfortunately, it is not for sale here due to some contract negotiations with the online distribution.