When logged into your account, click the gift icon near the top right corner and choose “Refer a friend”.  You can copy that URL to send to your friends and family, or you can enter their names and email addresses directly on that page and we'll send them an email that includes the link to purchase.

When someone you refer signs up, you'll receive a book credit. Each credit is good for one hardcover book with a color cover and a black and white interior.