1. You need your unique gift card code, which is part of the gift card that was emailed to you as an attachment. It will look something like ZJK-YRK-COQ-EMJ.
2. Browse the store and add products to your cart as you normally would.
3. Move to payment page.
4. Type your gift card code in to the 'Coupon or gift code' box and click 'Confirm'.