Khris, there's no difference between drawing a human, a lion, a car, or the innards of a pocket watch. It's all just a bunch of shapes and form. The only difference between drawing a organic and mechanical object is scale and amount of detail. As far as book recommendations, I've read and can recommend
Drawing on the Right Side of the Brain (a terse read, but very informative) and
How to Draw What You See (focuses on building foundations with basic 3-dimensional shapes and refining the drawing in steps).
The Natural Way to Draw is also recommended a lot but I found it to be filled with too much art-hippie poppycocks.
how can you like art adams AND jrjr? that boggles my mind...I mean i acknowledge that it is POSSIBLE to like them both but...i dunno i like the sympathy or understanding to truly comprehend it.
Zen? I dunno. Sure some of his art has issues, but there's plenty to like about it as well. Same thing with Pat Lee, and yes, even Liefeld.
Oh and Happy Whateverth Birthday, Panda-san.