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.
Self, without having to type the name of the link after the pipe! This trick also works with namespaces, so that [[Wikipedia:Tip of the day|]] (again notice the pipe character) displays like this: Tip of the day
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2. Plural trick: While editing, you will often need to make a link to a plural. For example, suppose you wanted to link "Fred Foo was famous for his study of puddles" to puddle; you could link it like so: [[puddle|puddles]]. However, you can save time by instead writing [[puddle]]s. This also works for adjectives ([[Japan]]ese), verbs ([[dance]]d), and any other suffixes or prefixes, like [[bring]]ing. It does not, however, work for some irregular verbs. For example, [[try]]ied does not work; you have to use [[try|tried]]. Nor does it work with apostrophes needed outside the wikilink like: [[J. R. R. Tolkien]]'s.
Wikipedia has its own search engine, with its search box on every page. The search box will go to a given page name, but there are three ways to go to the search results page instead.
If you activate the magnifying-glass icon (or the Search button) from an empty search box, you'll go to an empty search results page.
If you start any query with the tilde character, it always generates search results, ~page name.
Choose "Search for pages containing" from the page names that drop-down as you type (if you have JavaScript enabled). To access the suggestions that drop down as you type, click the mouse on them, or use ↓, or Tab ↹, to access them.
At an empty Search display, there are filtering options for:
Content pages – Search in (Article)
Multimedia – Search for files
Everything – Search of all content (including talk pages)