Here is a decent video put together by a guy named Clay Hayes. He does a decent job of showing how to break the quarters apart by muscle group, and gives a brief description of what each piece can be used for. I found it helpful.

WOW, that is about perfect. I like the way he is working through it group by group. Only 12min in, but that is the one I will have pulled up when I am breaking mine down if I get one.