Animator Patrick Smith offers advice over on Scribble Junkies about drawing hands, an area of life drawing I still struggle with. He rails against both Preston Blair and Burne Hogarth’s popular treatises, and I’d have to agree with him there (I think the Hogarth “dynamic” books stunted my artistic abilities and understanding of anatomy by a few years, personally…).
One of the responses in the comments section rings true: “The drawings of hands you admire were probably drawn by people who looked at hands, not drawings of drawings of hands.”