Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Star Maps 50th Anniversary

This a excellent book to buy if you are just starting to look at the sky at night. It has monthly maps and descriptions of what you will see in the United States. It also has some extra's like how to see comets, meteor showers. It also describes constellations and what month they appear. This book can be used with a small telescope, binoculars and the naked eye.