Fill in your contact + billing information, and enter your payment information if required.
Follow the instructions above, and enter your coupon code where it says "Add promotion code" (usually on the right), then click "Apply" and the price should recalculate.
Enter your contact + billing information, then under the billing section, enter the student's name and email address under "Students". Note that you are automatically assumed to be the student; you will need to delete your own name and email address from this part of the form. The person listed in the Students section will gain access to the training. Then enter your payment information to complete the purchase.