Introduction to Software Development on SAP Hana - which instance to connect to in CAL?

I'm working on the self-paced version of the course, and up to week 1, unit 4. I've set up my AWS account, but I cannot figure out which CAL instance to use. I understand that there's supposed to be an instance that has an image for the class, but I do not know where it is. I've been through a huge amount of documentation and user questions, but none seem to be current (April 2020), so all answers lead to bad links.

Can anybody help? If not, I may just give up on this course.