It's straightforward to use the Acer coupons and get discounts:
Tap on any of the promo codes and copy them from the Hardwarezone Coupons page
Visit the Acer website opened on the next tab/window of your browser page
Add the items to your shopping cart and proceed to the checkout
Paste the code into the "Discount Code" box on the checkout page
Click "Apply Discount" After that, you can 'checkout' and proceed with the payment