Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Best book for learning Spanish

I have read lots of books on learning Spanish over the years. This one is the best. It explains things in a way that is easier for native English speakers to understand Spanish. It explains words that are identical in English and Spanish. It explains verb tenses in an easy to understand manner for all the tenses. It also helps you to start forming conversations. Plus it has illustrations by Andy Warhol!!