The Quick Access Toolbar is a small toolbar above the Ribbon. It's there to make the commands you need and use most often readily available.
What's best about the Quick Access Toolbar? What's on it is up to you. That is, you can add your favorite commands to it with a simple right-click. You'll get a chance to do this in the practice session at the end of this lesson (and we've also included the steps in the Quick Reference Card at the end of the course).
You'll see and use different Quick Access Toolbars depending on the area of Outlook that you're working in. For example, customizations that you make to the Quick Access Toolbar for messages you send will not appear on the Quick Access Toolbar for Contacts.