To use one of the various special Redemption Codes that Andy will sporadically create and publish on Twitter, Facebook, the newsletter etc, add some items to the cart, then during the checkout process, on the Choose Payment Options page, you will see a box that is marked Redemption Code. Enter the code into this box and it will be applied once you press Continue. Be sure to enter the code exactly as it was typed by Andy which is normally ALL CAPITALS for ease of use. (Please don't skip the full checkout by using the Paypal Express button as it doesn't allow you to enter codes; you will still be able to pay by Paypal using the Payment Options page)
Subscribe to the Heresy Newsletter, or follow us on Twitter or Facebook using the links in the menu bars to be made aware of any secret codes and so forth as they are created!