There are a couple of different ways to redeem depending on the deal you purchased. If it is a local deal you would print off either print your certificate and take it to the business you purchased it from.
If it is a online national deal then there will be redemption instructions posted on the deal and will also be emailed to you after purchase.
You will generally go to another website to enter the certificate code which will either zero out your order or leave a shipping amount. This way the vendor can collect shipping information to process the order.
If you have any other questions for any deal vendors feel free to find their contact in the Business Center