I've been thinking about building a platform like this for a while, and it was quite fun to build.
Let me know if you have questions or ideas for new exercises.
Are you planning to add "lessons" related to deployment? For example, using libbcc vs CO-RE?
On libbcc specifically, I'm not sure it's worth it, CO-RE / BTF is where things are heading, and any reasonably new kernel supports it (<5 years old)