Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Several Books in One

This book can be read in several ways.Taking it head-on, it is a true story of some real heroes of the Computer Revolution. People who got into the guts of the machine to truly understand (or "grok") how it works and why. From the Tech Model Railroad Club to Apple, these are the people who we can thank for the Internet, for personal computers and for just about any automated system we take for granted today.Taken another way, this book demonstrates an often-overlooked way of teaching and learning. The Hackers have one thing in common: An innate desire to learn. Sometimes all it takes is putting a person in a room with something interesting, and letting them explore. That person will learn more than any book or lecture could have taught.Finally, this book is can be a great gift for a student of computers. Just the thing to inspire someone to greater things.