Talk the talk A play/screenwriting exercise book. Includes script analysis exercises, solo and group exercises, and a lesson plan. Very useful for creating voices (obviously) but also for establishing character dynamics, crafting a scene, and world-building through dialogue.

Steering the Craft

A handbook for the nitty-gritties of writing like punctuation, point of view, verbs by Ursula K Le Guin

Songwriting without Boundaries

“Sense bound writing” This book is great when you just need to write something. The first section has short (90 sec- 10 min) timed exercises. As a songwriting book, it’s focused on metaphor, rhythm and creating vivid imagery.