Give Philip K Dick a chance: Start with ‘Ubik’. I think we all need a little bit of Dick in our lives, to broaden our horizons.

I wouldn’t recommend Anderson Dune books.

Pohl has some classics Heechee Saga Space Merchants Man Plus

Ringworld

Vernor Vinge: Fire Upon the Deep

John Scalzi: Old Mans War Series

Haven’t seen these mentioned here, but the “Old Man’s War” series by John Scalzi is great as are “The Expanse” books by James SA Corey. I’d highly recommend those to anyone, but especially those looking for grounded and hard-ish sci-fi that doesn’t lose the reader or become overly technical.

I highly highly recommend Old Man’s War to anyone looking to get into sci-fi novels for the first time, Scalzi really takes care of his reader and his writing is a delight. The Expanse books are awesome whether or not you’ve seen the TV series… the show runners really took care with the source material and, ask any fan of the books, it is a great adaptation. The show hits the same plot points of the books while getting there in new and interesting ways. Further, the show created a new character in Kamina Drummer who immediately became a fan favorite of both show and book lovers (she’s an amalgamation of a couple of book characters and becomes her own thing that really adds SO much to the story and world building).

Blindsight by Peter watts.

Now some half-derelict space probe, sparking fitfully past Neptune’s orbit, hears a whisper from the edge of the solar system: a faint signal sweeping the cosmos like a lighthouse beam. Whatever’s out there isn’t talking to us. It’s talking to some distant star, perhaps. Or perhaps to something closer, something en route.

So who do you send to force introductions on an intelligence with motives unknown, maybe unknowable? Who do you send to meet the alien when the alien doesn’t want to meet?

You send a linguist with multiple personalities, her brain surgically partitioned into separate, sentient processing cores. You send a biologist so radically interfaced with machinery that he sees X-rays and tastes ultrasound, so compromised by grafts and splices he no longer feels his own flesh. You send a pacifist warrior in the faint hope she won’t be needed, and a fainter hope she’ll do any good if she is needed. You send a monster to command them all, an extinct hominid predator once called “vampire,” recalled from the grave with the voodoo of recombinant genetics and the blood of sociopaths. And you send a synthesist – an informational topologist with half his mind gone – as an interface between here and there, a conduit through which the Dead Center might hope to understand the Bleeding Edge.

Blindsight is the ability of people who are cortically blind to respond to visual stimuli that they do not consciously see due to lesions in the primary visual cortex, also known as the striate cortex or Brodmann Area 17. --Wikipedia

• Octavia Butler
• Ursula K Le Guin

E: Markdown

Some of my suggestions:

• Forever War - due to time dilation this story follows combatants that spend decades at war while on earth hundreds of years pass (inspired by the Vietnam War).
• Stanger in a Strange Land - Story of a human raised by Martians coming to earth. Has similar religious notes as dune and hyperion, but also has a weird Ayn Rand vibe (in my opinion, also not necessarily in a bad way).