Step 1. Purchase your Groupon using the buy button at the top of the page.Step 2. Locate your redemption code, which differs from the Groupon number and can be found in the center of the voucher. The voucher is viewable in the mobile app or by going to My Groupons and clicking the print link.Step 3. Visit the Zoobooks landing page and enter the redemption code located in the center of your Groupon into the "Coupon Code" field at checkout.Step 4. Enjoy!