As a Joomla! administrator you should be familiar with how to create and manage menus, menu items, the modulepositions and the menu types etc. Learn more about Managing Menus.
- Adding a new menu and menu maintenance (create menu, create module, module settings, Editing)
- Any dependence which involves doing this action
- Adding a new menu item and menu item maintenance
- Any dependence which involves doing this action (Actions which could be executed by a menu item)
- Deleting, Editing, Copying an item, Moving an item to another menu
- Changing the order of items in a menu
- Moving a menu to a different position
- Creating a submenu
- Modules position, see which modules are assigned to a particular menu items
- Filtered views / view types & options
- Menu types category view, etc.
- Hidden menu item (how to create and why you would need this)
- Menu alias (Alias generation, purpose)
- How to create a vertical menu parting from a horizontal menu (with the same content)
- Menu creation parting from another existing menu
- Batch (Purpose, Options)
https://docs.joomla.org/Menu_Management