Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Must Warn You Not to Use This...You Will Look Like an Idiot

This book does not use American Sign Language (ASL) grammar. This is "signed English", which is VERY DIFFERENT. If you have ever heard a foreigner struggle to say something in your native tongue and completely bungle it because they didn't know the rules of the language...that's exactly the position you will be in using phrases from this book when communicating with ASL signers. An experienced signer might be able to figure out what you're trying to say, but it won't be pretty. I concur with previous reviews that if you are serious about learning ASL, and especially if you are seeking a career that involves signing, you will shoot yourself in both feet and an eye with this book. So unless there is a specific reason you need signed English phrases, my recommendation is that you instead buy this phrase book:The American Sign Language Phrase Book. The phrases, which span various categories, use correct ASL grammar.