There's a 25-part lecture series by Sapolsky on Human Behavioural Biology. Evolution, how genes work, how brains work, how emotions work etc. He's a great storyteller, very funny, apparently kind and considerate, and knows his stuff. What an amazing course. No prerequisites, I think anyone could understand and enjoy it. My very unsciency girlfriend adored it too.

https://www.youtube.com/playlist?list=PL848F2368C90DDC3D