When you buy Yuzu titles, in-store or online, you will receive an email from Yuzu Customer Care (yuzucustomercare@bncollege.com), containing a link and instructions to access your digital content.
From the Bookstore's web site:
HOW DO I PURCHASE DIGITAL CONTENT?
Buying digital content is just as easy as buying a printed textbook. Just go to your campus bookstore or shop the bookstore online. Choose the digital version of the title you need. Whether you buy in-store or online, you will receive simple instructions on how to set up your Yuzu account. Then download and install the free Yuzu app compatible with your device(s).
HOW DO I REDEEM MY ACCESS CODE?
If you received an access code when you purchased your digital content, go to yuzu.com/college and follow the instructions. The digital content will be instantly added to your Yuzu library so you can download it to your device, or access it online.
For more information, visit the bookstore's Customer Care page.