I can't look very deeply into your link and see what the courses actually say, from here, so I'm not sure. I think you want to teach me to be better at pandas. That's fine and I learn pandas constantly, but not what I'm talking about. I want to mix in a different way of working with data, getting some of the best features of excel into the notebook workflow.

I also believe that getting to know your data means reading it in a grid, not just looking at aggregations. Both are important, and with aggregations you can miss important things! Sometimes the simplest solutions are the best.