First, confirm whether you have an account in EdX. If not, you can create it first. Then select your favorite EdX product and add it to the shopping cart. Click the calculated button, and finally, jump to the EdX payment page. After clicking, you can select the EdX Discount Code you need to use, and then return to the payment page to continue the payment. It should be noted that the used EdX Promo Code will be automatically removed from your Coupon Code.