Creating an article
Once you are logged-in, a new menu will be visible. To create a new article, click on the "Submit Article" link on that menu.
The new article interface gives you a lot of options, but all you need to do is add a title and put something in the content area. To make it easy to find, set the state to published.
You can edit an existing article by clicking on the edit icon (this only displays to users who have the right to edit).