Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Upselling is more than a 'little extra' ...

The author has given some upselling plans for new and existing accounts in this book. The author talks right from what is upselling to the essential upselling priniciples. Some pointers are given for upselling over the phone and for a face-to-face interview with a cusotmer. If you have some free time this book is worth looking into.Also recommended: 25 Sales Habits of Highly Successful Salespeople, 25 Most Common Sales Mistakes, The little red book of selling by Jeff Gitomer, Crossing the Chasm, Made in Japan, Marketing Warfare, The World is Flat, Salesmanship, Only the Paranoid Survive.