I’m interested in helping friends tell the difference between fact and fiction, truth and hearsay and general stuff like that that gives peace of mind that they can defend themselves from gaslighting, makes life easier to live, and harder to be taken advantage of by propaganda. Just a few examples.
Bonus points if it’s free. I see one on coursera that runs for four hours per week for several months which works out at roughly over €100 https://www.coursera.org/specializations/logic-critical-thinking-duke
It seems difficult. The kind of person willing to study such a topic probably already has some skills. Most folks are non-criticial because they like to be that way, so you’re really asking for them to change their personalities.
That said, I liked the fanfiction novel Harry Potter and The Methods of Rationality (hpmor.com) despite its serious flaws. But, it is generally the target of intense hate in the regular HP fanfic community. It has its own fandom that is mostly separate.
https://en.wikipedia.org/wiki/List_of_fallacies is a pretty quick read, with links to follow–maybe start there?
I’ve been wanting to work through “Statistics” by Freedman, Pisani, and Purves, which talks a lot about confounders and other mistakes people can make. But, while not super technical, it’s a college level textbook.