<i>Never oversell</i><p>This is a delicate art. Suggest-selling can enrich the customer's experience. My mother ran a bookstore and I didn't like doing sales and suggesting additional books. I was never pressed to, but I noticed that other employees could suggest an appropriate related book without pushing the sale.<p>It wasn't often that the customer would take it, but because it was appropriately related, they wouldn't lose out on the experience, and if they did like it, it was higly positive and a win-win situation. A skilled salesperson is interesting to observe.