Here it is, as promised. After two BSoD events and numerous other interruptions, I've managed to patch together this tutorial. Well, part 1, at least.
Basically, I've just drawn a shape, created a bone layer, put the shape in it, then placed some bones over the shape. Because the shape has points in it, I'll later be able to assign those points to any particular bone. The bones can then be moved to create movement in the shape.
The main thing to know about placing the bones, is that they are in the proper sequence. If you get one wonky and out of place, the whole animation will foul up. Still, with a little experimentation, you may choose to create a little oddness in your animation by "misplacing" the bone order. Or, even add bones outside of the image and manipulate it in other ways.
That's about it for this one. I'll get part 2 finished as soon as possible, lest the dreaded Blue Screen gets me!
The music for this vid is "Wallpaper" by Kevin MacLeod of incompetech.com.