Excel Keyboard Shortcut: Activate filter

Windows shortcut
Alt+↓
Mac shortcut
Option+↓

Excel Keyboard Shortcut: Create table

Windows shortcut
Ctrl+T
or Ctrl+L
Mac shortcut
Control+T

Excel Keyboard Shortcut: Select an entire row

Windows shortcut
Shift+Spacebar
Mac shortcut
Shift+Spacebar

Excel Keyboard Shortcut: Select an entire column

Windows shortcut
Ctrl+Spacebar
Mac shortcut
Control+Spacebar

Excel Keyboard Shortcut: Select the entire worksheet

Windows shortcut
Ctrl+A
or Ctrl+Shift+Spacebar
Mac shortcut
⌘+A