Changing the language in the Mac OS X operating system

Mac OS X operating system comes with Turkish as the default language, but you can change the language as you wish. To change the language, you should follow these steps in order:

Click the Apple menu (the Apple icon in the top left corner of the screen).

Click System Preferences in the menu that opens.

In the System Preferences window, click Language & Text (or Language & Region in newer versions).

Drag the language you want to switch to and move it to the top of the list.

Click the red symbol and close the window.

The changes will take effect when you restart your computer.