Some time back, Scott Myers of Go Into The Story posted up a series of articles on the fundamentals of script writing. They were useful but I felt they didn’t get as much traction as they deserved. So, for your reading pleasure, I present to you Scott’s complete Screenwriting Back To Basics series.
Screenwriting Back to Basics, Day 1: Writing Scenes
Screenwriting Back to Basics, Day 2: Protagonist Metamorphosis Arc
Screenwriting Back to Basics, Day 3: Plot = Structure