Everybody in our modern world has heard something about the Retail. Retail is just when you go outside to buy a sandwich. But what if an ordinary snack bar on the corner becomes a giant supermarket? In this case it usually needs a system to manage the sale, delivery, stuff and many other things. So I want to tell a bit about the testing of these systems. What a newbie may face with, and how to sell on the Cash desk (so you can grow into a good retail tester or to a cashier).