I rate books on a 5 star scale, but the qualifications for stars differs from most scales. With me, three stars is a really great review. 1 star: I finished the book, but struggled the whole time. 2 stars: The book was okay, but after reading it once, I don't think I ever will again. 3 stars: I liked the book and would read it again. 4 stars: The book was great. I would read it again, buy it, recommend it to others, all that jazz. It's a book that I had a hard time putting down to do other things. 5 stars: This book consumed my life. I spent all my time either reading about it or thinking about it.