yea there’s a lotta good stuff in books you can’t quite get anywhere else (tho fwiw many of geuss’ books are actually just collections of essays!). there’s a ton of different directions you can go, if i had to give a suggestion i’d say start by reading something contemporary / watching a lecture
and making note of names that sound interesting, and following that thread. i’m biased but i think geuss is a relatively approachable read and namedrops a bunch of cool folks, but definitely a pretty opinionated pov.