Ok! Jammed out the hand study in not too much time... well, scrap that, it took forever, but here it is. Can you guess which of the panels is the first attempts and which is the last? Guess correctly and you'll get the genuine, ultra-uber No-Prize! Exciting I know.
Now I think I've got a decent grasp of the hands at various angles and have a feel for how they move and work. Hopefully my work here will help others learning the very difficult process of drawing hands.
For a general reference, I didn't use any single method for making the hands... Sometimes I used block+stick construction (as you can see in a few of the hands), sometimes I used circle+tube construction, and a few times I just freehanded it (mostly towards the end).
Block+Stick and Circle+Tube pre-construction methods are really helpful for getting a handle on how things work, but after I was comfortable enough with it and started just freehanding it, I think freehand sometimes turns out better... or at least more stylish. Block building tends to turn out just as you'd expect: blocky.