I'd start with the "IR in the classroom" sticky. I think either drive mechanics or brush interference is what I've seen suggested next, but I can't remember for sure.
Thanks for the feedback guys. That's why I like this forum. Looks like I have a lot of Learning to do. Are the sticky threads the place to start to learn the basics?
So here's the question. Is pitching something that requires a instructor or is this something that I could learn and teach her to at least get her started?
Your DD has to throw three or four times a week, 30 to 60 minutes for years.
It is very possible to develop the basic motion. There have been several people who have done what you are suggesting. The basics of the throwing motion aren't difficult.
The overall plan is to use different drills to build the motion. It is a little like putting together a car...you build the body, then you build the engine, then you put them together, then you refine it.
The two things that you are trying to develop are (1) the arm motion and then (2) the lower body mechanics correct.
Boardmember (God bless his little ugly head) did a wonderful job with the IR arm motion. The "IR in the classroom" has several drills that you can use to develop the proper motion. Java did an equal impressive job with lower body mechanics.
The question is whether *YOU* enjoy pitch and catch. From a Daddy's perspective, this is literally standing (or sitting) under the oak tree talking to your DD while she throws a yellow ball.
I did and I still could play pitch and catch for hours. I enjoy being outside and the rhythm.
MISTAKES BY NEWBIE DADDIES
The mistakes are:
1) Trying to teach breaking pitches too soon. Your DD won't need a breaking pitch for at least 4 years. Don't waste time trying to teach her a "back door curve rise". If you can get her to "just throw strikes", you'll have a great time.
2) Underestimating the work. This takes time. Slow and steady is the name of the game....making a little progress every day.
3) Not enjoying the process.
4) Not knowing when to back off....you are trying to develop a pitcher (or raise a child) who doesn't need you. You have to know when to fade into the background.
Based on the swing clips you've posted, you have a very athletic daughter. I'm sure she'll pick up the basics quickly. Being barely a year ahead of you on the journey, my suggestion is to avoid talking about it as learning to pitch, and approach everything as learning to throw (or play catch) underhand. Help her understand how fluid the motion should feel/look/be before trying to do the whole windup, leap, and drag motions. "Whip happens" - you can't really force it.
The nice thing is that many of the basic drills, such as "lock it in", can be done using something as simple as a rolled up sock against a wall in the house (or a propped up mattress, in your case!).
Best of luck!
Speaking from experience. Unless you are intimately familiar with the development of a pitcher, your DD needs a coach. I tried to watch videos, read forums, and work with my DD; nothing produced results like getting a pitching coach.