With the Netflix series coming out, I can't recommend the book trilogy enough.
It's the approachable sort of hard sci-fi that delves into complicated concepts without getting too deeply into the weeds. Everything is really well set up and explained, and like all the best trilogies, every book in the series gets better than the one that came before.
It was also written by a Chinese author (Cixin Liu) in the early 2000s, so it offers a unique perspective and gives you a glimpse into how someone from a country like China (the world's second largest economy, but with dramatically different economic/political processes and historical/cultural development than the US or Europe) views the realities of the present and the possibilities of the future (spoiler: its way more optimistic than a lot of Western authors... to an extent).
But most importantly, the series is full of some really interesting ideas and concepts, especially in regard to the Fermi Paradox. It makes you think, imagine, and philosophize, which is what I love about reading sci-fi. Anyway, it's definitely worth reading the series before having your idea of it tainted by the TV show, which will inevitably butcher certain aspects, and tarnish what your imagination could have dreamt up on its own.