To change the name of a page go to Step 3 and click on Organise pages. The list of the pages that round down the left represent all of the pages you have created. The ones on the right allow you to structure the navigation buttons and dictate which of your pages will have a button on the
site. If you have not already sorted out the structure of your pages then you can do so here.
If you need to change the name on any of the pages double click on the name and you can change it straight away by retyping the name. There is also a small video on this page that will show you in more detail what you can do with your pages.