Benjamin,
It might be helpful for you to get confirmation that there are no excellent polished Wikidata tutorials in existence.
The good tutorials are made by people who know Wikidata, like the one EMW shared, but EMW is not a graphic designer and made a practical presentation rather than a corporate scripted slideset.
Your "poof it works" article is the state of the art.
It is all very casual and everything understates how important and revolutionary Wikidata is. I still show your article to lots of people. Of all the Wikidata narratives I have read I like yours the best.
yours,