How do I switch to another language?

There are two ways to do this,

• Go to system>administration>Language Support in your menu, and choose your language settings.

looks like DoR got the same thing as me

• Before you log in, you can change your language (bottom left, select your language).

System->Administration->Language Support
From here can change your current language or install new ones.

You can use "Language Support" to change the system's current language(s).

"Language Support" is located in the System Settings (which you can find in the Launcher), and can also be found directly in the Dash by typing language.

Click the Install / Remove Languages… button to download and install a language that is not currently on the list, and then drag/drop the listed entries according to your preferences.

To apply your changes to the login and title screen, click the Apply System-Wide button.