In 2019, [https://commons.wikimedia.org/wiki/Commons:Structured_data Wikimedia Commons is undergoing a major update]: it is now possible to describe files on Wikimedia Commons with multilingual, structured, machine-readable data from Wikidata.
This hands-on tutorial for Structured Data on Wikimedia Commons newbies will teach you, step by step, how to get started with structured data on Commons: how to upload files with structured data, how to edit existing files and add structured data to them, how to search structured data on Commons. If, by August 2019, some nice volunteer-built tools already exist that allow to work with structured data at scale, these will also be demonstrated.