6. Changing Your Password

Your password you use for the Macs is the same as the password for Gallardo. You can change your password easily using the Macs; click on the blue Apple in the top-left, and select System Preferences.... In the Accounts preferences, you can find your way easily from there.

Industry-respected security expert Bruce Schneier has a good write-up on Real-World Passwords and another on Choosing Secure Passwords that you should read.