Whenever the topic of of redistricting/gerrymandering or voting comes up, I always like to recommend CGP Gray's series of videos on the subject: https://www.cgpgrey.com/politics-in-the-animal-kingdom

I think the "meta" issue of improving our political system is probably the most important political issue we should focus on for the long-term health of our society. Does anybody here have other good resources to recommend for learning about these issues, both from a theoretical standpoint as well as groups/organizations that are advocating for improvements in this area?