Here's the advice I give to people about the entire Dune series:
Read Dune. If you don't like it, stop.
Read Dune Messiah. If you don't like it, stop.
Read Children of Dune. If you liked Messiah you'll probably like this as well.
Read God Emperor of Dune. This one stands alone. Lots of people hate it. Whether you like it or not, don't stop.
Read Heretics of Dune. If you don't like it, stop.
Read Chapterhouse: Dune. Weep that it's over.
In my experience, people who like Dune generally will enjoy at least through Children of Dune. Anyone who enjoys God Emperor of Dune is insane (maybe why it might be my favorite).
Regarding the other Dune books, read them out of curiosity if you like, but they're not really Dune books despite being in that universe. I've read about seven of them out of optimism and hope but didn't enjoy them at all. Even Sandworms of Dune which is ostensibly based on Frank Herbert's notes for Dune 7 wasn't enjoyable to me, although it was least bad.
Here is the plot of God Emperor of Dune: <SPOILER> sits on their butt all day and discusses politics. Oh, there's a sort of assassination plot happening on the side, but let's not let that distract us from hearing political ruminations!
As for (some of) the Dune books whose position in canon is of some dispute:
... I can't recall anything that happened in Dune 7. Surprisingly forgettable. Then again, I don't remember a lot of Heretics or Chapterhouse in the first place.
The pre-prequels are set during the events of the Butlerian Jihad and suffer horribly from the sin of feeling the need to explain the genesis of every single important piece of lore in the series. Be amazed as every important event in the universe happened within a hundred years of each other, no matter how unrelated they are to one another.
The plot isn't the sum of these works, it is the scaffolding provided so that the author can explore various themes and theses.
Otherwise I thought the entire series worth reading, Messiah and God Emperor included.
Was there anything in particular that turned you off? I do remember putting off reading it for several years because it simply didn't sound that interesting and the feudal aspects sounded more like fantasy than sci fi. I'm genuinely surprised by that comment though because I thought there was more than enough intrigue and mystery introduced early on, I was hooked almost instantly.
When I was very young and first found the Dune books, I liked Dune, but failed to finish Dune Messiah, let alone the rest. A few years later I re-read Dune, plus Dune Messiah and Children of Dune. I needed some maturing I suppose.
I stopped after that at the time because my parents only had the first 3 books, the book's front matter listed exactly those 3 books, and there was no internet yet to tell me there were 6 books instead of 3.
> Anyone who enjoys God Emperor of Dune is insane (maybe why it might be my favorite).
Some more years later I was browsing the sci-fi section of a bookstore and to my surprise found 3 more Dune books. Read them all, enjoyed them all, even God Emperor of Dune.
I read one or maybe two of the prequels; enough to decide that continuing reading the _other_ Dune books was not a good idea.
If you can, please read the book first before seeing/doing anything else in the universe. Don't let your imagination be spoiled!
(I'm not very interested in reading the sequels. Children of Dune was a terrible movie, IMO.)
Which makes me wonder what I missed with regards to J.R. Tolkien and George R. Martin.
A second "R", for one.
I have since reread the first book a fair few times (most recently via the excellent Audible audiobook production) but never had any desire to try the subsequent novels again.
At some point, I was so sucked into the Dune universe that any continuation would have intrigued me.
God Emperor would be my favourite, with Children of Dune following after
I highly recommend it.
You can skip everything by Brian Herbert and Kevin J Anderson.
[1] https://web.archive.org/web/20070703213605/http://www.digita...
I enjoyed Messiah
But I just couldn't go through Children. I had to put it down. Felt like an average TV series.
I’ve never been able to finish Heretics, though. I just get too bored.