Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Applied compendium of best practices

When you search the web and most of the books around, you can find solution to your problems most of the time, but you are rarely sure it was the best way to do it and how it would fit to the rest of your code. The authors of this book are not afraid to tell what they suppose to be the best for you, along with full featured versions of code illustrating each chapter.I found it easy to take the code from a sufficiently leveled chapter and adapt it to get just the application that I needed, knowing it would be fast, clean and complete at the same time, although I didn't understand all the details at first. Now, the book serves as a widely findable documentation for the packages that I make. Highly recommendable.