Dear Stefan2, Welcome to MediaWiki.org!
Yes, welcome! This site is dedicated to documenting the MediaWiki software, the software behind many wikis, including that of Wikipedia and the Wikimedia Foundation projects.
Please, take a look at the following pages. They might prove useful to you as a newcomer here:
If you have any questions, please ask me on my talk page or email me if it is private. Once again, welcome, and I hope you come to feel comfortable here, and find this site useful documentation of the MediaWiki software. Thanks, and regards, ---MyrtonosTry liquid theads Again welcome MyrtonosTry liquid theads 11:43, 2 October 2013 (UTC)