This is one of the main focus that we suggest for the documentation sprint during the Wikimania Hackathon 2017: improving documentation regarding how to use Wikidata in Wikipedia.
Technical stuff or not, Lua documentation, successful use cases, sharing what the other Wikipedia communities do...
Feel free to ask subtasks and work on it during the doc sprint (August 9-10) and beyond!
We created a page https://www.wikidata.org/wiki/Wikidata:How_to_use_data_on_Wikimedia_projects to document the different ways to access Wikidata data from the Wikimedia projects. To be improved!