Mouse shortcuts can be useful for saving time on some of the more common events. All mouse shortcuts have an alternative method of accomplishing them without knowing the shortcut, but it can save a lot of time if you learn the shortcuts:

Plan View

• Zoom the camera:
  Mouse-wheel Up/Down
  
• Reset view:
  Click middle of mouse (wheel).
  
• Drag page 
  Hold Left and Right buttons and drag page

3D Navigation

• Rotate the camera:
  Click and drag.
• Pan the camera:
  Shift + Click and drag
  or Left Click + Right Click and drag
• Zoom the camera:
  Ctrl + Click and drag
  or Mouse-wheel Up/Down
  or Right click + Drag
• Reset view:
  Click middle of mouse (wheel).
• Move 3D or Format menu
  Ctrl + Right Click and select Move 3D to open a dialog
  or Format the item