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.
You can save e-mails in your "Documents" (or "My Documents") folder instead of taking up valuable space in Outlook. The less you store in Outlook, the more efficient it runs. This process works the same in Outlook 2010 and Outlook 2013. Please see additional videos on saving e-mails in older versions of Outlook.