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.
Category links work in a special way; they determine which categories an article shall belong to. The categories are displayed at the very bottom of the page, no matter where the link is inserted on the page.
Sometimes you may want to create a link to a category page without putting the current page in that category. This may arise on discussion pages or draft articles. To create such a link, place a colon (:) at the beginning of the link, like this: [[:Category:Physical exercise]], which shows up like this: Category:Physical exercise.
So if your link does not appear where you expected, it just means that you forgot the leading colon.
The same trick applies to links to Wikipedia in other languages. To create a visible link to the Indonesian Wikipedia article "Teknologi," use the id prefix for Indonesian, with a colon before it to keep it visible: [[:id:Teknologi]], which creates id:Teknologi.
Any user on Wikipedia can create a User page. While you are logged in, your name appears in the top middle section of the screen. Click on the name and then create or edit your User page. Tell us about yourself and your motivation to participate in this project. Other users can leave comments on your Talk page. For experiments and personal projects, you also can create subpages to your User page, or you can use your User sandbox.
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.