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.
When using math in an article, there are two different types of markup that one can use. It is important to be consistent throughout an article and use the same type of markup. If a formula appears all on the same line, it would be better to use HTML than LaTeX, because L∞ looks better in line than does; however it's generally a bad idea to attempt to render in HTML.
This is an oldie but goodie, that for sure works in Firefox...
Visit Conveniently searching Wikipedia, and follow the instructions for your browser. It's a bookmarklet that sits on your toolbar, and which serves as a Wikipedia search button that you can activate from any web page. The next time you want to look something up on Wikipedia while browsing a web-page, highlight the term and then click on your new bookmarklet.
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.