This is a very comprehensive and detailed book on computational complexity. Its target audience are the advanced undergraduates or the first-year graduate students in computational science or a related field. The book has many good and interesting exercises and is very suitable as a textbook. It can be used as a self-study textbook for researchers in other fields as well. However, the notation may not be too familiar to those who have not had any prior exposure to the topics in computational complexity. I am a theoretical Physicist and I consider myself to be fairly well versed in advanced mathematics, but I would probably want to read a book that is at a level just below this one in order to familiarize myself with the notational conventions. Otherwise, it is an extremely interesting and well-organized textbook.