You can change the time increments shown in your Outlook calendar to allow for smaller more detailed calendar entries. This will work in Outlook 2003, Outlook 2007, and Outlook 2010.
Knowing a few navigation tricks can help you to be more effective when using your Outlook calendar.
Creating keyboard shortcuts for your most used programs, files, and documents can be a big time saver!
The Quick Launch Toolbar can be a great tool for quick access to your most used programs.