Pretty good for what it is: an overview of the form, and the author presenting their preferred narrative schema for screenplays.

You aren't going to find the extended stories of Lumet or Goldman's memoirs here, just mostly anecdotes to illustrate some point he's making. Goes heavy on the ideas and encouragement on what to do when you're stuck in a rut, which is appreciated. The one thing it doesn't really go into is dialogue, which is a bummer.