Another excellent resource is Will Eisner's Comics and Sequential Art. https://www.amazon.com/Comics-Sequential-Art-Principles-Instructional/dp/0393331261/ref=sr_1_1?ie=UTF8&qid=1504028111&sr=8-1&keywords=sequential+art If you do not know who Will Eisner is, do some research as he began the whole graphic novel genre. He was an incredible artist and the best teacher one could have.