Prequels are unusual novels. They should be written to introduce a book and series for someone who has not yet read any of the material. Yet their prime readership will be from those who have already read the series and want more. So you have to evaluate prequels from both prespectives. Usually, they favor one dimension or the other.
As is the usual case for prequels, Dune: House Atreides will primarily appeal to those who have read the Dune novels. The Harkonnens are beautifully cast as thoroughly nasty, despicable, and incompetent. The tension between the religion of not having thinking machines and the potential to create new technology is nicely developed. You will also get a good sense of Emperor Shaddam IV. Duke Paulus Atreides is a very enjoyable character, and you will delight in the places where he comes into the story.
I found much of the novel to be competent, rather than compelling. Unfortunately, these sections included Duke Leto Atreides, Duncan Idaho, and Pardor Kynes. These characters could have been magnificent, and provided much more fascination for the series. They come across as attractive, but not as people you want to grasp and hold onto because they are so appealing.
As a result, interesting, additional details comprise a reasonably small part of this book.
For those who have not yet read Dune, I felt that the book had one mistake in it. Readers will discover a bit more about physical changes that Guild navigators experience than is desirable for enjoying the whole series. In all other ways, this book will help the new reader anticipate and enjoy the beauties of the Dune series more. The background of much of what is happening will still seem mysterious after reading about it in this book, which is good. The origins of the key power groups are alluded to, but left murky. I think that approach was a good decision, because it encourages the reader to move on to other books in order to learn more.
The lack of illustrations was a missed opportunity. Many of the concepts in Dune lend themselves to pictoral explanations. In fact, each of the covers of the later novels added to my enjoyment.
I do encourage all fans of science fiction to read this book. It is a worthy volume in one of our greatest series.
After you finish reading this book, I suggest that you think about what really is most important to you in your life. As this book shows, you can achieve fame, friendship, wealth, power, family closeness, or prescience. The more someone focuses on one, the less they have of the others. How will you make your choice?
Look forward to enjoying more of what provides the most meaningful satisfaction!