The on-wiki tour docs have progressed to a reasonable state. I have a
general upfront documentation section, then a walk-through of on-wiki
versions of both of our current tours.
Contributions are welcome once people start playing around with this.
https://www.mediawiki.org/wiki/Guided_tours/Write_an_on-wiki_tour
https://www.mediawiki.org/wiki/Guided_tours/Shared_tour_instructions
Matt Flaschen