If you have a code, make sure to keep an eye out for a link at the bottom of the order summary page which states 'Got a promo code? Please click here'
This little critter is lurking at the bottom of the order summary page (the first page you're redirected to after clicking 'add to cart' through the book builder).
Just simply copy and paste or enter the code into this box, click apply code and you're good to go! But beware.... These codes are case sensitive, so need to be entered how they are presented when sent to you via email!
Please also make sure there are no spaces before or after the code or this will render it useless :(