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Playwriting Books Really Worth Their Salt
Playwriting-in-Process: Thinking and Working TheatricallyPlaywriting-in-Process: Thinking and Working Theatrically by Michael Wright
Buy used from: £10.49
Imaginative and useful. Improvisations for playwrights. Good for teaching too. Unique 'troubleshooting' section.
The Playwright's GuidebookThe Playwright's Guidebook by Stuart Spencer
Buy new: £7.73 / Used from: £4.60
Insightful introduction. Brilliant for writers from other genres want to explore what makes drama different.
Three Uses of the Knife (Diaries, Letters and Essays): On the Nature and Purpose of DramaThree Uses of the Knife (Diaries, Letters and Essays): On the Nature and Purpose of Drama by David Mamet
Buy new: £7.80 / Used from: £7.00
Inspiring and often provocative treatise on drama.
Writing in RestaurantsWriting in Restaurants by David Mamet
Buy used from: £0.73
Wide-ranging and highly readable essays on writing and life.
Story: Substance, Structure, Style and the Principles of ScreenwritingStory: Substance, Structure, Style and the Principles of Screenwriting by Robert McKee
Buy new: £13.47 / Used from: £10.95
This gets a lot of flak from cineastes, but is a useful take on narrative structure, and isn't as prescriptive as the reputation suggests.
Stealing Fire from the Gods: The Complete Guide to Story for Writers and FilmmakersStealing Fire from the Gods: The Complete Guide to Story for Writers and Filmmakers by James Bonnet
Buy new: £13.59 / Used from: £7.99
Mythic/Jungian approach to story structure. A bit abstract, but go with the flow and it'll blow your mind.
The Empty Space (Penguin literary criticism)The Empty Space (Penguin literary criticism) by Peter Brook
Buy used from: £0.01
A must-read from the influential theatre director and thinker.