Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Too much useless information

I'm Korean and bought this to brush up on my language skills. Half the book is filled with a stupid introduction that has nothing to do with the language. The remaining portion teaches things you can learn on television. This is a commercial book for people who want to have it in their bookshelf to show off. This is not a good book to learn from. They don't even have the alphabets listed together on one page that can serve as a reference for writing skills!!!!!!! If you don't have something as basic as that, the glossary in the back isn't going to help you out very much. Returned the book as an unsatisfied customer. Don't get this book - waste of time and money (lost shipping costs).