1. Make sure that you are signed in.
  2. Navigate to the page that you wish to hide from the world.
  3. Click the Edit button at the top of the page.
  4. Click the edit link next to “Visibility: Public”
  5. Select the “Private” option.
  6. Click “Ok”
  7. Clikc “Update”

Your page is now hidden from the public.

 

Full demonstration: