Without customers, you don’t have a business. Understanding customers is just as important (and sometimes as hard) as understanding technology. First, understand your customer’s needs, then supply the products to satisfy them. Don’t focus on making more sales; profits are only a reward for creating value for customers.
To work in retail is to hear complaints. It’s your job to address each complaint, found or unfounded, from each retail customer. While this part of the job is often the source of headaches, it can also be educational. Here’s a list of things you can learn from customer complaints.