Please take a moment to review this information. It is likely to save you time and effort in the future. The same username and password grant you access to all of these services, and when you change your password for one of these, it changes your password for all them.
Most people know their e-mail address.
Your username is always lowercase, and it MUST always be typed in lowercase letters when you are logging into a system. This is because to most computer systems, Jsmith is a different person than jsmith. This can be confusing because most home computers are not case-sensitive. When in doubt, it is safest to use lower-case letters. There are currently no systems on campus that will reject you for using lowercase letters in your username.