It's a repo for learning materials from the https://fullstackopen.com/en/ course given by University of Helsinki
submission system: https://studies.cs.helsinki.fi/stats/courses/fullstackopen
https://fullstackopen.com/en/part0/general_info#studying-the-course-in-a-nutshell
https://fullstackopen.com/en/part0/general_info#typos-in-the-material