Hey Uli,
the R# related content really seems to be very helpful, although the number of actually written chapters is still quite sparse. :)
Apart from that, I really like the way this documentation is generated. I am aware of Github pages (and I have been using them for some time now), but I never heard about Gitbook. This seems to be a simple way to create structured tutorials once you get past the installation overhead. Perhaps we come back to this when we improve the KaVE documentation :P
Thanks for the link!
best
Sebastian