As an aspiring actor, I loved reading this book. Shurtleff takes you into the audition scene and gives you real life examples of what to do and what not to do. Some of the advice he gives is pretty self-explanatory but still extremely helpful. For me, I have referred back to this book to help me get into a good acting mindset. It emphasizes being yourself during an audition, while taking advantage of the many parts of the audition so the auditor gets a well-rounded view of what you can do.
This book gives information that is not only helpful in auditions, but can be implemented in basically every part of acting. I really like how this book talks about human nature and integrating that into character development. I'd say the most helpful section for an actor would be the Twelve Guideposts. In these chapters, Michael Shurtleff gives great outlines for making the character come to life using things like relationships, conflict and motivation. My favorite guidepost is number 6, Discoveries. In this guidepost, it talks about being involved in the moment, which can lead to new discoveries about other characters, themselves, the scene, or the show as a whole. It explains that the more discoveries the actor makes in a scene, the better it will be. I recommend this book to actors, directors, and anyone involved in the show-biz, but it can be useful in real life as well. It gives good tips on how to present and market yourself that can be useful in job interviews and meeting new people.