You can create new websites via "Ad management", "Overview" in your publisher account. Simply click on the blue button "Add website". Later, you can create individual ad units and ad layouts for your respective pages. You can then compare the performance of all ads on your pages via "Reports", "Revenue per placements". The dashboard provides an overview of impressions, clicks, CTR, CPC, eTKP and revenue.
Important for creating the new page: In addition to the name and URL, enter as much information as possible for the page description and the categorization for black- and whitelisting, so that suitable advertisers can be assigned to your page.