To activate your YouTube code, first open the YouTube app on your device. Navigate to the sign-in screen, where you’ll see an activation code displayed. On a separate device, go to yt.be/activate in your web browser. Log in with your Google account if prompted. Enter the activation code from your device into the provided field on the website, then click "Next" or "Continue." Your device will automatically sync with your YouTube account, granting access to your content. This simple process ensures a seamless experience across all your devices. Enjoy watching your favorite videos!