The document discusses buyer-seller dyads and different types of personal selling situations. It describes the relationship between a salesperson and prospect as a buyer-seller dyad. Personal selling situations are divided into two groups: service selling which includes order takers, delivery salespeople, route salespeople, missionaries, and technical salespeople; and developmental selling which includes creative salespeople of tangibles and intangibles. Recent trends in selling discussed include relationship selling, consultative selling, team selling, and sales force automation.