Hi Harald,
no, I couldn't find one. At the link I used I only found a page that said that the documentation will come soon. So thanks for the hint.
Hope I won't forget the texts as I think about writing them when I solved all my problems. To do that before makes no sense. ;-)
But until now I still can't find my solutions. I followed your link. Read all the instructions and had nothing to modify. Everything is configured correctly I hope. When I am looking into the different parts (Content, Categories, Modules, etc.) jDiction seems to be integrated into the system correctly.
Maybe the main problem is, that the module is not shown correctly!? Maybe then everything works fine. As said I only get the Moduletitle, nothing more.