Instruct: Classify the given Amazon review as either positive or negative.
Query: Book: A Big Mistake

I purchased this book to enhance my knowledge of Pro/E. I have been using Pro/E for over 6 years. Purchasing this book was a big mistake and a waste of my time. This book is very second-rate. The instructions and procedures in each chapter are not clear, correct nor complete. The quality of the illustrations are poor. It looks like the book was produced on a copier machine.Toogood assumes that the reader knows everything. If this was true, why would anyone buy a book to read and learn from. This book was a big mistake. It now holds my coffee in the morning.