Click the "+" button, and then select "Blank Page":
Enter the title of the page and make the appropriate selections for the name and folder options. Click "Create Page."
Tip: Instead of starting with a blank page, use a page template to get started with content. Pages tagged with the word "template" will show in this list.
Tip: By default, new pages start in no folder on your workspace. You can use the Select Folder option to select a folder to place the new page inside.