Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Only superficial

Although I have not completed the book I've gotten to the first 7 chapters and I have not found it that enlightening. Most of the referenced shops are old and out of date. The depth of discussion is common sense at best. For example there is a chapter devoted to dust collection but no information on how to determine which size of collector is needed. Nothing on ducting size, determining static pressure loss, length of run, grounding techniques, etc. All very important in deciding how big a collector to buy and how to install. Yet the title implies it is a how to guide. Again very superficial on most topics covered. No guidance is supplied.