Thanks for the offer Jean-Charles, but I prefer to keep things my way. I have a particular view on what I would like this tutorial to look like, so I prefer to write the things myself. It may take some time, but I will finish it at some point. However feel free to write your own tutorial!
Thanks for the german translation offer as well. I don’t think it will not be ready by October. The new semester begins, with new lectures, and other things to do at work.