I'm not sure if there is a specific course on rigging a ball, waylow would probably know.

If you want to learn rigging in general check out https://cgcookie.com/course/fundamentals-of-rigging .

Or if you want some tips on rigging and learn more about cookies, biscuits and crackers then take a look at  https://cgcookie.com/live_streams/blender-rigging-tid-bits

Eat cookies and carry on (or biscuits, or crackers)

Hi sageart,
We don't specifically have a tutorial on that yet but I'm aiming to include that in a course that is coming very soon.