Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A Useful Tool

I have used this book for years (since the 1990's) and trained hundreds of supervisors with it. As with any tool, it is not the end all for training materials, but a useful adjunct for use with practical experience and common sense. Remember, there was a time when the only things supervisors had to know were planning, organizing, directing and controlling. Today's managers need so much more. This is a very good book to start discussions on those other areas of supervision. Well worth the price and worth keeping as a useful reference.