Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A book to sell other books

On almost every chapter of this book the author just scratches the surface on interesting subjects and will reference other books instead of completing and going deeper into the subject himself. I didn't give a lonely star is because I did find some little bits of information. By the title you would think that it's a book to have; not so. If you can browse it, don't buy it.