It is increasingly annoying that the Linux user base is ignored.
Especially annoying is that replacing python on Linux is non-trivial.
You should state that Linux is not supported in the course description!
" Don’t assume, assert! "
… that said …
I managed to find what I think is the most direct solution, probably useful on all OS:es.
… and then I executed the get-pip.py using blenders bundled python like so.