In the search box, type in the name of the article you wish to create. When told that the page does not exist, click the link either in red or with the question mark.
You can also type the title as the URL in your browser's link field and get there directly–e.g.:
Perhaps the easiest way to start a new article is to follow a link to a page that does not exist yet. Depending on your settings, these links may show up as red links or have a question mark at the end of the link (red links?).
Note: The ability to create articles directly in mainspace is restricted to autoconfirmed users, though non-confirmed users and non-registered users can submit a proposed article through the Articles for Creation process, where it will be reviewed and considered for publication.
