Logging in more quickly!
This is a tip that I found by accident that is so useful, but so simple. When you start up your Mac, if you don't have the automatic login, it will display a window with a list of all the accounts on that computer. At first, it doesn't look like there is a quick way of logging in using only the keyboard. It is not like a regular dialog box, so having the "Full Keyboard Access" for "All Controls" won't help. The truth is that it couldn't be easier. You simply have to press the first letter of the name of the account that you want to log into. It will highlight that specific account and you now have to press "Enter". You are then ready to enter your password as usual. This also works with the fast user switching login window.