As for me, the original book was simply nice, hardly more. Further sequels turned the story in some kind of terrible nonse. Some fanfics were great, like "The true story of Dune" by Andrew Lyakh.
---------------------
I do not know why I wrote this book. Who cares now that God knows when, in an unknown wilderness, a long-forgotten emperor ruined himself, his state and his people in a mad war? What does anyone care about the oddities of an era that has long been forgotten in itself? The emperor's name was Muad'Dib, the planet was called Dune, the kingdom of spice, and now it seems to me that nothing but false fairy tales and legends could grow on its barren soil. Nowadays, by an inexplicable whim of fashion, these chronicles sewn with frankly white threads, thickly sprinkled with lies, or even hastily composed for someone's need, suddenly became incredibly popular and gave their re-cut and repainted heroes a rebirth.
But what is really behind these stories? Official textbooks will tell you more than sparingly in different versions about the following: as a result of the Fourth STR, the spice economy and spice means of communication have given way to more advanced computer technologies. That's how they suddenly gave in. You can also find out that as a result of the transformations, the imperial system of government ceased to exist. That's all.
The second, incomparably more voluminous group of sources are books and films about the romantic emperor of Dune, the young Paul Muad'Dib–Atreides, who performed miracles of heroism, as well as miracles just like that, in the fight against the villains of the Harkonnens and for the glory of the desert people of the Fremen. These fabulous adventures, invented by a whole team of authors and repeatedly edited by responsible officials, are now being presented as a true story of events, and in this form they are an undoubted success with the vast majority of the public. The technique is far from new – let's recall how the footage of the storming of the Winter Palace from Eisenstein's "October" was passed off by the authorities for a long time as a documentary chronicle. But even quite sane people who see what rotten beams are propping up this whole historical farce are inclined to say: "Why touch it? This is already a cultural tradition, this is an epic. Leave it! "
And indeed, who needs the truth? It is inconvenient, it interferes with many people's lives. The path to it is difficult, full of troubles, and often outright dangers, and even when found, it tends to deceive the expectations of her paladins, because it is incomprehensible, paradoxical and does not at all strive to conform to human ideas about her. So is the game worth the candle? Why destroy a beautiful legend with the callous, crude prose of a document? I don't know, but I can say one thing: the thirst for truth is indestructible, just as the simple desire to tell at least someone how it really happened is irresistible.
Lying about Dune has always been beneficial to everyone. All these warring clans that succeeded each other on Arrakis–the Harkonnens, the Atreides, the Harkonnens again, the Valois, followed by the emperor, the Landsraat, and so on–actively played along with each other in writing all sorts of fables about the spice homeland, passing the baton of lies along the chain. The Harkonnens invented a fantastic story about terrible wild Fremen to make it easier to hide their machinations with melange from the emperor. Muad’Dib desperately needed a hastily concocted tragic detective story about the treachery of the Harkonnens to hide the truth about his own father's death. The hired scribblers of the Landsraat composed a fairy tale about the heroic Arrakeen revolution and the dashing Muad'Dib, since it would be extremely inconvenient for the leaders of the parliament to tell how this revolution was actually carried out and with whose money. And it would be absolutely unpleasant for all participants, without exception, to announce the true background of the terrible fratricidal massacre on Arrakis and the details of the elimination of the emperor who had become unnecessary.
This chain of deception, omissions and falsifications forms what is called the "official version" – the basis of legends and TV series.
----------------
What about the screen adaptation? Ok, as for me, the first part was not impressive. I'm not sure if it is really necessary to watch the second one.