Ask HN: Best Resources for Learning Robotics

Pulling together any resources associated with learning robotics, any aspects, coding, electronics, mathematics etc, hopefully, it can be helpful to others. Similar to what meta academy has done. The biggest issue I'm run into is finding resources with the best pedagogical approach. The internet is obviously filled with vast amounts of resources but from my experience, only a selection are really great for learning from. From your direct experience what have been the resources you've found the most effective?