Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very vague and full of mistakes

It came as a surprise that such a hopeless book will be published by McGrawHill. Since I am fairly familiar with Linux ( LPI certified ), I could tell the mistakes, whenever I came across one. But I am wondering about the public there.Also all teh topics are handled in a very shallow manner.It is clear that the author himself does not understand well about MBR, disks, IRQ s etc.It has all the symptoms of being written by a technician rather than a technical author.