Enter Google play, click Apps.
Enter Google applications market APP download.
Search "VR" key , you can find many VR applications. Click the application and downloads.
Enter the selected application page, click install.
Enter the Google play on your computer to download the application, you need to log in Google account and let the phone connected to the computer. If you have installed Google applications market on your phone , you can search "VR" key directly from the mobile application market and download.