This app recommends a new hobby randomly, the initial list of hobbies is based on the Wikipedia list of hobbies and Wikipedia intro data. You can see how the initial data was generated in the Bootstrapping folder.
If you would like to add information to a hobby or add to the list of hobbies, please do!
You can find all of the hobby pages in the /templates/ directory. Simply edit the labelled section to add whatever information you like. Ideas to get started: links to beginner resources, links to communities, a better description, a pitch for why the hobby is fun
If you'd like to add a new hobby to the list, just copy an existing template, update the filename, title field and information and you're good to go.