This is the correct way to change fonts throughout your site. Even though you have the ability to change fonts at the module level, for continuity throughout your site we recommending changing them in the “Customize” section of your site. See below:
This is how to save modules as templates to use throughout your site on other pages. Modules can be saved globally, which means whenever you make changes to it, wherever that module is placed it gets updated.
This is how to manage your header menu. Add a menu item or submenu item to your header or anywhere else you have a menu, like your footer. You can also create new menus here to use throughout your site.