Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very clear introduction to Algebraic Number Theory

This book is a very clear intoductino to ANT. It is a good first step for many reasons. One: it stays with algebraic number fields that are extensions of Q, the rational numbers. You get a good feel for the subject. When you go to more advanced books Q is replaced by other fields (P-adic, function fields, finite fields,..).Two: He assumes very little and writes very clearlyThree: You only needs to read his Galois theory book for the prerequisiteFour: His book is what is usually left for the reader to do as an excersize in more advanced books.