Really great way to think about acting, but even better when considered as a directing book. The tools he outlines in the book are great to contextualize relationship, stakes, and the self-fulfilling prophecy of fear (the number one cause of a bad performance is fear that you'll give a bad performance). The few exercises he touches on are really useful for fixing some of the most common problems I see in all levels of performance, and help actors clarify for themselves why they are there, what they're trying to change, and what will happen if they succeed or fail.
For actors, it continues the line of thinking started in something like How to Stop Acting by Harold Guskin: that intellectually trying to create an emotional through-line is a self-defeating task, and there are some much simpler (NOT easier) things to focus on that are exponentially more helpful in creating a live performance. Not really for the total beginner, I think the text would be more useful for someone who already has a solid foundation in the craft. The book spends most of its time dissecting and dismantling common blocks, like "I don't know who I am" or "I don't know what I want."
As an aside, I didn't realize until halfway through that this book was actually originally written in Russian.
Overall, a great book that has fundamentally changed the way I think about scene work.