I've been using Wikipedia to learn for as long as I can remember and have been a registered user since 2010.
I expand knowledge on topics such as geographic locations, ethnic groups, languages, world history, politics, medicine, genetics, pathology, taxonomy and occasionally music. Otherwise, I build article structure or integrate articles more into Wikipedia and clean up grammatical errors, missing or inappropriate hyperlinks, wording, ambiguity or comprehensibility, neutral point of view and layout as well as adding redirects or other. I also occasionally create articles, typically from red links but sometimes not, in order to add to an area or category of low coverage. Other things I do include adding TemplateData to templates, adding short descriptions, adding WikiProject templates to talk pages, adding/updating article assessments, fixing/improving templates and signing unsigned talk page comments.
I normally come across the pages I edit in my everyday research. These often include articles that were last edited a long time ago, stubs, articles without sources and other obscure articles. I also used Wikipedia to extensively study aviation from 2012 to 2014 but did not edit during this period.
I upload files to Wikimedia Commons. Most of these have been linguistic vector image maps I've created, usually where no map existed before. I've also uploaded my own photos of notable landmarks and third-party free-use medical images under CC-BY or CC-BY-SA licences, and sometimes I've vectorised existing maps, cropped photos or otherwise improved existing files.
Gadgets I recommend other users enable
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