Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Packs quite a punch!!

For under 300 pages of content, this books packs quite a punch. I've always liked books that are under 400 pages because we never get to finish reading those that are over 1300 pages (definitely not for learning a new language). I start out with a mid-size book like this one and once I grasp the basics, I dig into advanced topics with another hefty book. But this one had me covered with so much I don't think I need an advanced book. Christian Darie proves it again - big books are heavy books, small books are great books. He and his co-author organized the content nicely and included lots of code examples that work. Real code! With links to some of the best stuff on these topics.