Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Too many errors

The layout of the book is nice: each chapter begins with a reading and analysis of the text and then continues with further grammatical explanations and cultural notes. For someone who just wants to review the basics of Spanish for informal use, this book is probably sufficient. However, it is filled with too many errors to be of much help to someone who wants to make a serious effort to learn grammatically correct Spanish. There are minor mistakes throughout, and the explanations of preterite vs. imperfect and the uses of the subjunctive contain significant inaccuracies.