For serious students and teachers this is the basic bible of improvisation. It gives a strong, basic philosophy of improv for both teachers and actors. It contains methods, games and a variety of techniques to develop oneself both as a teacher & and actor. Step-by-step approaches are offered as well as overviews for ones own creativity. The book is well-organized, too so that the teacher/actor can easily access a favorite warm-up,beginning game or advanced exercise. Not a book for skimming! One must study this book, that is if you truly love the theatre!