First off, this is a book only for those hearty souls that are serious about learning how to write screenplays. Are you ready to learn the old-fashioned way? By planting your butt in a chair and writing? Then block out some time and sit down and start working your way through this book. Aside from Ackerman's kick-ass authorial tone—he's the co-chair of the UCLA screenwriting program, after all—this book abounds with exercises. Each chapter ends with a section called Writer's Gym Exercises and in the later half of the book you'll find in-chapter Adrenaline Exercises that will challenge you to take your craft up several levels.
In the book's early chapters Ackerman provides a bunch of practical advice on how to make sure your screenplay isn't deselected because it doesn't look, feel, and read the way screenplays are supposed to. No matter how good the story, you have to nail the do and don'ts, and Ackerman shows how to do just that. In the middle part of the book you get schooled on screenplay structure, and here Ackerman introduces his unique device for laying out the three-act structure: the Scenogram. He also guides you through the use of scene cards.
The middle section is where Ackerman lays out his dictum that Scene = Conflict. With Chapter 12: Dancing the Wadoogee (What does the character want and what does the character do to get it?) Ackerman digs into scenes, beginning with a contract, which the screenwriter must sign, to put conflict into every scene. The discussion here focuses on reconciling writer objectives and character objectives, plus a ton of do and don't advice designed to keep you locked in on creating great scenes. In Chapter 13: The Components of Scene Writing, Ackerman takes up the practical topics of Writing Character Descriptions, Describing Place, Writing Narrative Action, and Writing Dialogue. For writers of literary fiction who are attempting a screenplay, this chapter is essential reading to get your head into the right game.
I could go on . . . it's a great and inspiring book on the craft of screenwriting. Get it and then get your butt in the chair and write!