CU login name, university

hey i need some help,

so i enrolled in a course on coursera from the university of colorado, and i need to read articles so they said to use "VPN to access the university network off campus." wich i tried to do BUT:

- i don't have : CU login name and identityKey password.

So i'm stock in this step, i'll appreciate anyone who can tell me what to do now.

thank you