This site looks useful: https://uxtools.co/challenges/ https://uxtools.co/challenges/ . There are articles as well as challenges. I'm not sure it is systematic,

This site looks useful: https://uxtools.co/challenges/ https://uxtools.co/challenges/ . There are articles as well as challenges. I'm not sure it is systematic, but it looks like it covers a number of useful things to know.