To apply a promo code to an order on WorldMarket.com, you will want to add the desired items to your shopping cart. Once you are ready to check out, navigate to your cart. There should be a designated field labeled "Promo Code" or something similar during the checkout process. Enter the promo code there exactly as you received it, paying attention to capitalization and any potential spaces. After you have entered the code, you may need to click a button to apply it to your order. The discount should then be reflected in your order total. If you do not see the discount applied, it is a good idea to double-check the terms and conditions of the promo code, as certain codes may have restrictions or expiration dates. For any specific questions regarding a particular code, it may be helpful to check the current web page for contact information or further assistance.