Instruct: Classify the given review into positive or negative sentiment.
Query: Worth it if you get a couple of new ideas

A book like this is worth it if(1)you find a couple of new ideas OR (2) if you are in applied work and it's sometimes necessary to justify a rule of thumb you are using to others -- "see, I'm doing it just like they say on page XX".By that criteria, I recommend the book. It's not a textbook and sometimes the explanations aren't as clear as I'd like, but the explanations are pretty good.If there's a sequel, I'll probably get that as well.