Instruct: Classify the given Amazon review as either positive or negative.
Query: Very useful guide for vocabulary building

I bought this guide while I was studying at the university and found it very helpful for improving vocabulary. This book should be required for beginning students of Spanish because there are over 20,000 Spanish-English cognates, making the vocabulary acquisition process much simpler than for non-western languages such as Chinese. I wish I had this book during my study abroad in Costa Rica, I would have learned much more and faster.