Fantastic course on particle physics culminating in the Higgs boson discovery. It is fairly technical, so you should know some elementary physics typically covered in the first two years of university. But the emphasis is on conceptual understanding, there are almost no quantitative /math questions, but the lectures do reference things like amplitude probability and conservation of quantities that will only make sense if you've seen them before. There are also segments with Professor Higgs himself sharing war stories that led to the discovery of the boson carrying his name. There are many instructors for each part of the course, and some are clearer than others, but the majority (80+%) are fantastic and there are regular quizzes to help reinforce ideas.

Best and Advanced Physics Course. I really enjoyed it.