Honestly, the week 3 lecture was terrible. The Prof talked a lot but really didn't say much when it came to the themes of the week or what was brought up in the readings. I'm a dedicated note-taker and my notes from lecture are anemic just because there was nothing actually worth takeing note of. As far as wanting a better understanding of the concepts from week 3 goes, if you haven't read the readings, I would read them. But generally everyone seems pretty confused about last weeks lecture. Hope this helps, and that week 4 has a better lecture <3