Instruct: Classify a given review into positive or negative sentiment.
Query: Book required during study

This course is designed for study WITH THE BOOK. I purchased this course in hopes of learning Catalan while driving. It is not intended for this application, and it doesn't work while driving. Without the book, it's a long slew of Catalan, no English, and no repetition. By contrast the Pimsleur system (they don't have a Catalan course that I could find) builds language skills slowly, repeating all words in English, then the other language.In some sense, this is an unfair review. I'm not reviewing the product for it's intended use. So be it.