Instruct: Classify Amazon reviews into positive or negative sentiment
Query: An overly lengthly and difficult to use reference

This is not the book to buy if you want to become a better pilot. It is chock full of all sorts of useless information including mathematical formulas that add little or nothing to one's ability to fly. What information is here is difficult to find for it may be buried on page 253 of the book's 1003 pages.