The Art of Dramatic Writing

Read Ibsen's A Doll's House before you read this; it's used as a case study throughout the entire book. This is specific to writing plays but provides a very useful methodology for focusing your storytelling toward a specific goal, and avoiding listless and pointless writing which stems from having no clear conclusion (or conviction) in mind. (It was written in 1942 so it's possible Egri's ideas have been adapted for other mediums.) I recommend it for anyone who wants to write but hasn't had any formal/classroom training.