Cartooning: Philosophy and Practice by Ivan Brunetti was one of the two books I read for a Comics Pedagogy class in my MFA program over the summer. It took me a while to get into Brunetti's sometimes unnecessarily familiar tone but it's a very good outline for a 15 week comics class and by the conclusion it's downright inspirational. Probably one of the best books on teaching and making comics available. Also very short! I'd highly recommend it.