Once you're at the login page, your username and password will be the same ones that you use to access your email or a networked computer on campus. When you're new to the University, this will typically be your S-number and your date of birth (ddMonyy). For example:
Of course, it's always a good idea to change your password to a unique one that's impossible for others to guess.
The login screen will look like this:
For step-by-step instructions, follow the video tutorial below, which also contains some information about what to do if things go wrong: