Hi:
I believe that when you need credentials, they are supplied to you. Exactly what Chapter/Lesson are you working in and what are you doing? Exercise, demo?
Here are two screen shots to compare. When you do the first demo in Chapter 2, remember that you need to click the Open Demo Steps button underneath the video to see the instructions.

For example, in Chapter 2, in one of the early demos, you are told to Cancel the connection window:

When you get to a later demo, you are provided the instructions to log onto the SQL server:

And then in Chapter 6, there is another example, where we provide you with information to log on as Eric:

So if you are in the early chapters and you don't see any specific logon instructions, in the demo steps or in the Exercise solution, then that means you don't need to log onto anything.
You don't look on the 😧 drive for instructions. When you need a logon ID, it is provided inside the course. Remember that these logons apply after you're already on the Virtual Lab. None of the userIDs or passwords inside the courses will work to initially log onto the Amazon Virtual Lab.
Hope this helps,
Cynthia