To create a New Page, just click on the Pages button on the left hand side menu, and then click on Add New.
This will open up the following options: Page, Popup, Folder etc.
Simply select the Page option.
This will open up a window with the different designs available as a template for your new page. Everything is categorized into categories and you can preview each page design.
You can also click on Empty Page to start from scratch or Existing Page to select a page from your current website or template as a reference.
After selecting a template all you need to do is add Name, URL for the page and select a Group (folder) that is used for better organization of your pages and click Add to finish.