UPDATE 08/08/2013: THIS WORKS WITH ALL ANDROID DEVICES INCLUDING THE NEW NEXUS 7 (2013).
For those who can’t access WiFI on their Nexus 7 or Google Play won’t allow a certain application in being installed on your device, there is an alternative you can use in order to fulfill your needs. APK-installing or Side-loading applications is a widely-pervaded technique to load apps on your device without any problems.
1. On Desktop/Mac go to file explorer.
Desktop PC’s will not need an external software program but Mac users will. Check out our post here on how to transfer files between your Mac and Nexus 7.
2. Drag and Drop .APK files into “Downloads”.
Simply, drag and drop also the .apk files you want into the downloads section of your Nexus device. The picture shown is portrayed on a Mac. (Download .apk files from anywhere. Go to Google and search: ‘name of app’ apk. )
3. On Nexus 7, enable installation from Unknown sources.
Navigate to Settings>Security> Unknown Sources and tick the box, This will allow you to install applications other than the Play Store.
4. Open file explorer on Nexus 7 and navigate to ‘Downloads’.
5. Click on desired .apk and hit install and you’re done!
Once you finish this last step, the steps neccesary to install side-loaded apps are complete. Look for the app(s) in the menu. Enjoy!