Help:Starting a new page
There are several ways to start a new page.
MediaWiki makes it very easy to link wiki pages using a standard syntax (see Links). If you (or anyone else) creates a link to an article that doesn't exist yet, the link will be coloured red, like this.
Clicking a red link, will take you to the edit page for the new article. Simply type your text, click save and the new page will be created.
Once the page has been created, the link will change from red to blue (purple for pages you've visited) indicating that the article now exists.
From the search page
If you search for a page that doesn't exist (using the search box and 'go' button on the left of the page) then you will be provided with a link to create the new page. (Note that this technique doesn't work if you use the 'search' button).
Create redirects to your new page
Don't forget to setup redirects when you create a page. If you think another person may search for the page you've created by using a different name or spelling, please create the proper redirect(s). See Help:Redirects