Shortcuts are generally good:

When training to do heart surgery? Not good.

When developing software that helps people be more productive? Not good.

When using software more efficiently? Good.

These last two are obviously related: When the developers of Outlook created the program, they did not take shortcuts so that you, as the user of aforementioned software, could. And Outlook has a bevy of really great, really easy to remember keyboard shortcuts that you should know if you want to speed up your everyday interactions with it. (Keyboard shortcut: individual keystrokes—or combination of keys pressed at the same time—used to execute commands.)

10 favorite Outlook keyboard shortcuts from some people who use the program all day, every day

Switch between Mail, Calendar, and Contacts
Ctrl+1, Ctrl+2, Ctrl+3: (Mail is Ctrl+1, Calendar is Ctrl+2, and Contacts is Ctrl+3)

Create a meeting request
Ctrl+Shift+ Q

Move a message from one folder to another
Ctrl+Shift+V

Go to the Inbox folder
Ctrl+Shift+I

Toggle between ALL CAPS, all lowercase, and Sentence Caps
Shift+F3 (This works in Word and when Word is your email editor.)

Create a bulleted list
Ctrl+Shift+L (This works in Word and when Word is your email editor.)

In Calendar, go to the same day the previous/following week
Alt+Arrow Up (previous) Alt+Arrow Down (following)

Open the Address Book
Ctrl+Shift+B

Responding to messages
Ctrl+R (Reply);  Ctrl+Shift+R (Reply All); Forward (Ctrl+F)

Send a message
Alt+S (Note: Be careful with this one; your fingers learn it VERY quickly and if you have any hot-headedness inside you, you may find that you're blasting out messages faster than you're really thinking about them...)