Now for the buttons on the bottom. Save is used for saving while editing, Save and exit will allow you to exit after a save to return later. Publish page makes the page live, just saving it does not. Menu Maintainance allows you to insert the page into the menu, delete will remove all versions of the page and Cancel exits without saving. You can also save your page as a template file for use in other pages, just add a template name and click on Save as Template to store a copy of this page in the templates folder.