"The customer is a guest" has established itself as an appropriate metaphor for a desirable relationship between customers and booksellers. Guests and hosts share a common stage - equal and respectful towards each other. There are rules of engagement that ensure a smooth interaction in their relationship. The new edition of the book takes into account the changes in the book market towards online commerce. Jörg Winter compellingly demonstrates how important it remains to handle customers properly in the sales area and over the phone. The partnership model "The customer is a guest" with its relaxed forms of behavior continues to appear appropriate and contemporary. The author has been committed as a business consultant and trainer for the book industry since 1984.