Here you can digest how to use Wikipedia in bite-sized morsels. The tips listed below were created for the Tip of the day project, or the Styletips project, but are listed here by title and organized by subject area for your convenience.
Including the contents of a template page on a different page (by surrounding the page name with double braces, i.e. "{{}}" and leaving out the "Template:" prefix) is called transclusion.
This allows the other page to be automatically updated whenever the template page is updated.
Besides templates, pages in the following namespaces can be transcluded:
Category:
Help:
Portal:
User:
Wikipedia:
The only difference between transcluding these and templates is that you must include the prefix (followed by a colon) with the page's name inside the double braces.
Images also can be transcluded, but this is done using double square brackets instead of braces.
Internal links work for linking to other wikis, and bypasses the need to paste in URLs (which tend to be both long and cryptic and make source text harder to read). This also avoids the appearance of the external link arrow ().
The long form does not work within the same project. The shortcut works everywhere.
Links to foreign-language Wikiprojects can be made by prefixing the language code: [[:de:s:]] will link to the German-language Wikisource, [[:fr:wikt:]] to the French-language Wiktionary, etc. You can use piped links ( "|" ) to avoid seeing the colons in the link.
For a listing of current collaborations, tasks, and news, see the Community portal. For a listing of ongoing discussions and current requests, see the Dashboard.