You can organize your apps in so called folders on your Nexus 4. For instance you can put all your games into a games folder and this is how you do it.
You are trying to install or open an app that didn't come from the Mac App Store but you got a message saying App can't be opened because it is from an unidentified developer. This is how you bypass it.
If you are more of a visual person and would like to organize your folders and files using different colors, than check it out how to use color labels in Mac OS X.
The ability to save any of your selections and then use them at any given time is another useful Adobe Photoshop option. Let me show you how to use it.
