1. Log in to your site editor and go to Books.
2. Select the book you want to edit.
3. Click the Retailers tab above the book cover.
4. Select '+ Add link'.
5. Enter the link and the retailer name.
6. Check “This is an affiliate link” if applicable.
7. Click Save Changes.
8. To Edit or Deactivate, select the downward arrow next to the desired link.
Be sure to save changes both in the Retailers section and at the bottom of the page.
Learn more about setting up your books on your website here!