Ditto all the excellent advise. What I hated most was that after I rang up the purchase and the register calculated the change, the customer would decide to hand me a quarter or other change, and being lousy at math, I'd want to cry because I'd have to think hard about the proper change! The small discount store where I worked had an old register, not a scanner. I also had to remember which items were taxable. But I really loved it. I was scared stiff the first few times, but after a week or so, I was an old hand. You will be too! Good luck and have fun!