Ok, I added Tjalling to the names of studies.Another issue: I thought about putting two chapters into one study (because we can fit in), but I'm not sure about that, we can decide it later.
The pre-courses 1, 2, 3 and 5 are mostly done now for starters. Please give comments in the chats if you have suggestions or found mistakes.
The first 12 chapters have been made. Most of them are finished. Any comments or advise (and involvement) can be shared here and in the study chats.
You can also help by checking for mistakes... Sometimes I set up wrong diagrams :)