Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Recommended and useful

Of the 4 or 5 books I have on the Korean language, this is the best. This book goes beyond simple travel phrases, etc. and teaches you to build some basic sentences quickly. I did find the romanization is poor (in my view). And the cassettes could be improved upon. Also, I wish the Korean script was included in the dictionay in the back. Once you get familiar with the script, you begin to rely on it to understand correct pronunciation, since this doesn't take too long and most romanizations are erroneous. I don't have College Korean or Active Korean, two books I've seen often recommended, so I can't compare against them. But this book will give you a good introduction to the Korean language. A worthwhile and useful book.