Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Koeran At A Glance - Delightful!

I found this book to be quite helpful. I just came back from Korea last month and the book helped me a great deal. I taught myself Hangul and I learned quite a few words from this book. The grammar section is also helpful. And even when I didn't know how to say something, my hosts would pick up the book and look for the phrase in Korean and then point to the English equivalent for me. Between that book and there Korean-English Dictionary, we did quite well.