There are three ways to start creating a new page. One can click the Contribute button in the upper right corner and select "Add a Page"; one can follow a red link (of which a collection is found here), or one can fill out the intended page address in the address bar and click "Create". What follows is a blank slate to work with. It is generally advised to switch from Visual to Source mode when making edits and this goes doubly so for page creation. The reason is that while Source does require much more knowledge of wiki coding than Visual, it also offers much more control and does not produce unnecessary by-coding as Visual is prone to do.