Navigating Mountain Lion Applications
Many of the basic functions and menus of Mountain Lion applications and utilities are accessed in the same way. For example, opening a file from within almost any application is done by choosing File→Open. There are also some keyboard shortcuts universally used in Mountain Lion applications.
Opening and closing applications
This one is basic, but necessary, so I’ll keep it short and to the point. Use one of these methods to open an application:
Choose Go→Applications, or Go→Utilities, from within the Finder and double-click the application or utility you need.
Click the application icon in the Dock.
Click the Launchpad icon in the Dock and then single-click the application’s icon.
Choose Apple menu→Recent Items and select a recently used application from the list.
You can use one of these techniques to close an open application:
Choose the application title menu (immediately to the right of the Apple menu) and select Quit.
Click and ...