Each Emacs frame normally has a menu bar at the top which you can use to perform common operations. There’s no need to list them here, as you can more easily see them yourself.
On a display that supports a mouse, you can use the mouse to choose a command from the menu bar. An arrow on the right edge of a menu item means it leads to a subsidiary menu, or submenu. A ‘...’ at the end of a menu item means that the command will prompt you for further input before it actually does anything.
Some of the commands in the menu bar have ordinary key bindings as well; if so, a key binding is shown in parentheses after the item itself. To view the full command name and documentation for a menu item, type C-h k, and then select the menu bar with the mouse in the usual way (see Key Help).
Instead of using the mouse, you can also invoke the first menu
bar item by pressing F10 (to run the command
menu-bar-open). You can then navigate the menus with
the arrow keys. To activate a selected menu item, press
RET; to cancel menu navigation, press
C-g or ESC ESC ESC.
On a text terminal, you can optionally access the menu-bar
menus in the echo area. To this end, customize the variable
tty-menu-open-use-tmm to a non-nil
value. Then typing F10 will run the command
tmm-menubar instead of dropping down the menu. (You
can also type M-`, which always invokes
tmm-menubar.) tmm-menubar lets you
select a menu item with the keyboard. A provisional choice
appears in the echo area. You can use the up and down arrow keys
to move through the menu to different items, and then you can
type RET to select the item. Each menu item
is also designated by a letter or digit (usually the initial of
some word in the item’s name). This letter or digit is
separated from the item name by
‘==>’. You can type the item’s
letter or digit to select the item.