I studied Computer Science at the University of Würzburg (BSc) and at the Free University of Berlin (MSc). During my studies I ran a small IT business where I gained a lot of work experience as a system administrator and as a software developer.
Here are some of the companies I worked with:
I've published some programs as open source software as well as some tutorials on open source software as for example Linux. You can find these projects and tutorials on this page.
Some of these articles can also be found on several bulletin boards or wikis. However this website always has the most recent version of an article.