To enable the Google Play Store on your Acer R13, all you have to do is:
- Click the bottom right corner of your screen and go to the Settings page
- Hit the "About Chrome OS" button and then the "More info ..."
- Click the "Change channel ..." button and then choose the Click the "Beta" option
- Hit the "Change channel" button to confirm and your Chromebook will begin downloading the latest developer channel for device
- Once the download is finished, you need to reboot your Chromebook, and Voila! you are now in Chrome OS v55 beta channel
- Click the bottom right corner of your screen and go to the Settings page
- Look for the "Play store" section and check the box that says "Enable Google Play Store on your Chromebook"
- Hit the "Get started" button, and after you agree to the terms, you'll see the Play store app open
- Voila!
That's it, you can now download and install your favorite Android apps and games on your Acer R13, with more Chromebooks to be added later on.