Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Research 101?

I found this book very disappointing: the authors did a minimum of research. Instead, they filled the pages with photos of items from their own collection--the monotony of this approach is quickly evident. With very few pattern names given, and a far too general price guide, there is little information in this book. A self-indulgent effort, at best.