Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not worth the money

This isn't even a book. I may be wrong, but it looks like a bunch of photocopies bounded with spiral bound. The contents of the packet are basically the same thing you would get from the Immigration and Naturalization Service if you call them and request a naturalization package. And if you get it from the INS it's free. There's also a tape that comes with the packet that could help people who don't understand English very well practice what the interview would be like. This is probably the most valuable item in the packet. It would be useful for someone who can't get anyone to read them the questions in English. I recommend instead (if your first language is Spanish) Carlos F. Paz's Practica para el Examen de Ciudadania (available at Amazon). It's a real book, with more content than this one, and it costs four times less.