Instruct: Classify the given review into positive or negative sentiment.
Query: This is a great book!

I use this book to teach university and ZDU classes and it's one of the best on the market.The first half of the book is particularly good for beginners, although the Chapter on Classes (chapter 7), sometimes throws students for a loop (pardon the pun).I should tell you that I wrote the end of chapter questions and answers for the book as well.I have some errata and exercises for the book posted on my Visual Basic website.