This entertaining and informative video also gives a quick crash course in using NoveList. *Most* libraries in Massachusetts have access to NoveList through their network.
A little clunky as far as animated videos go...but relevant and short.
Kurt Vonnegut's master thesis in anthropology suggested that characters undergo ups and downs that can be plotted to reveal the shape of the story. Understanding these archetypical shapes may help you understand what stories may appeal to your patron.