Hi Kevin,
The instructions can be a bit confusing, but it's clear Javier has put a LOT of work into this lab, so I encourage you to read on!
The lab expects you to already have a working Sentinel instance.
Here's one way to make it work:
- Create a new resource group, log analytics workspace and Sentinel instance.
- NOW install the lab content pack.
This method worked for me.
You could also have applied the lab to any existing Sentinel instance.
The lab usage is very well documented here:
Azure-Sentinel-Training-Lab
And there are some known issues documented here:
known_issues.md