Feel free to travel around the site and see how you can contribute. Da Sie Deutsch sprechen, you might be interested in writing articles in German as well, if you wish to do so in our German ProleWiki. Do note it's been a while since the site has been updated and you can ask for an update for it as well.
Check out, whenever you can our How to contribute page. Also, we recently inaugurated a Hub to serve as a way editors can communicate with each other. You can ask questions there, make suggestions, etc. Hope we develop a good work relationship, comrade!