A review by rumbledethumps
Cartooning: Philosophy and Practice by Ivan Brunetti

4.0

I'm sure this would be very useful for someone who is looking to create comics. There is a lot of insight, and some fairly practical steps to becoming better at cartooning.

But it's definitely focused on a classroom environment. He often recommends using a photocopier as one of your tools to shrink or enlarge images, for example.