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.
Wikipedia articles should focus on describing facts in a neutral fashion. When writing about facts, cite sources that verify the information being presented. Stick to a factual style even when writing about fiction or opinions. Providing references is particularly important for controversial opinions—instead of using weasel words like "some people believe…," you should cite sources to help readers know who believes what, and why.
Here's how to install a nifty little program called Navigation Popups, that lets you peer into Wikipedia articles when you hover the mouse cursor over internal links:
Quick installation: Enter Special:Preferences and click "Gadgets", check the box to enable Navigation Popups, under the "Browsing" section, then click save. Follow the instructions on the page to bypass your browser's cache.
For this to work, make sure you have not disabled javascript in your browser. By the way, Navigation Popups is recursive: it works on links that appear in its popups.
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.