Before you can use any University IT facilities you need to complete your Registration as a student with the University; you'll also need your University Login Name and password.
New students normally pre-register with the University (see the Pre-Arrival page).
Having pre-registered, you will know that you have one Login Name (e.g. "b9987654") and two passwords:
It is your "main" password, that you will use for connecting your own computer to the Internet through the campus network.
See also Documentation.