If you want to edit an article, you first need to register and log in.

Click the "Edit" button that you see at the bottom of the article.

Make any changes that you wish to make.

Once you are editing, the "Wiki help" button shows you all the tags you can use. Or use "Quicktags" to the left for the most common tags.

Be sure to click the Save button to save your changes.

Want to experiment and try things out? Use the Sandbox.