Instruct: Classify Amazon reviews into positive or negative sentiment
Query: could have been better

my class is using this book as the primary book. I have found that the explainations are often very wordy when they can be put very simply. So far the book has been using essentially one running example, i think this is one of the weaknesses in the book. also i have found that the excercises do not necessarily reflect the examples in the text. could be better.