If anyone wants a beautiful obsession that requires only kindle books and internet searches, allow me to suggest Western Esotericism. It's not what you think.

Try to reconstruct the role of Pythagoras on modern society-- and then realize that the first attested hypothesis-driven scientific research question still hasn't been answered.

Start with "Western Esotericism: a guide for the perplexed" or the incredible Shwep.net, the "secret history of Western Esotericism podcast".