Manual:Help namespace

From mediawiki.org

The Help namespace (namespace index 12) is empty in new installations of MediaWiki. However, you can fill it with the public domain Help pages available from MediaWiki.org. To do so, follow these steps:

Optionally, you may wish to add a Help link on the sidebar. To do this, edit MediaWiki:Sidebar on your wiki and add:

** Help:Contents|Help