Starting with V7.9, users have the option of setting the presentation language of the site. Currently there are 10 languages available. To change working language please follow the step described below.
From the admin interface Admin Interface (Settings -> Site Settings -> Multi Language Support) enable Multi Language Support.
In the Front End go to Features -> Multilanguage and download the translations package.
Note: To be able to download the translation users must first login.
Next,if you're having trouble installing the package, please consult the Translation Tutorial.
Once installed, select the icon for the language you want to use.