There are three rules for writing a novel. Unfortunately no-one knows what they are.
7 Screenwriting Paradigms
Dave Herman has written a useful article about some of the most commonly used screenwriting paradigms (e.g. Blake Snyder's 15 beats, three act structure) and how they can both help and hinder writers.
The 11 Commandments of Writing
Henry Miller, author of the novel Tropic of Cancer composed this list of writing commandments for himself while working on said novel.