Once again amazone made me feel regret for opting to buy a book from it by delivering a second hand book! The book was without its oroginal packing and found somebody scribbled on some of the pages! This time I didn't returned the book since packing & sending through courier at my own cost was not a good experience like last time. It clearly shows that amazone did not ensure the quality of products sell on its platform. Coming to the book, similar to all HBR guides it is rich in content and an eye opener for any working professional. It covers almost all areas of improvement which I needed. A worth buy from amazone if you are for used books.