Lots of thanks to the 2G class that made this website possible ! They have have been working since september to learn how to use the content managing system named Joomla!.

Joomla! is an open source content management system platform for publishing content on the World Wide Web and intranets as well as a Model–view–controller (MVC) Web application framework. It is written in PHP, stores data in MySQL and includes features such as page caching, RSS feeds, printable versions of pages, news flashes, blogs, polls, search, and support for language internationalization.

(source : wikipedia)

If, as these students, you want to learn to use Joomla!, use the manual available at this address.