Head to your App and click on the navigation menu at the top left corner of the home screen. Once the navigation menu slides out, you should see an option that says "Wi-Fi Address Book." Within the Wi-Fi Address Book, you can add a new network for your Dino to remember.
To complete the process, head to your Dino's profile (located on the home screen) and click "sync Wi-Fi." This will ensure your Dino is up-to-date with all Wi-Fi networks you've entered into your address book.