These two screen components help you navigate through the various components of
Outlook. You can turn either or both of them off in the View
menu. Click on View, Outlook Bar to remove the
Outlook Bar from your screen.
Click on View, Folder List to remove the Folder List from your
screen.
Repeating the process brings them back.
Getting one of them
off your screen will allow more room for viewing your messages. I
recommend leaving the Folder List open as a navigation tool, as it gives a
little more detail than the Outlook Bar, but the choice between Folder List and
Outlook Bar is ultimately a matter of personal preference.