I read the original novel many times when I was a teenager, decades ago. It's a great story with lots of effective imagery, highly recommended, though a bit dated - published 1949, seventy-five years ago.
Though I had often wondered over the years whether it would ever become a film, I was not expecting this limited-series adaptation, so I was very surprised when it popped up. Also very worried, as it remains one of favorite-ever reads. "Men go and come, but earth abides" is a often-used quote for me. With some anxiety, I watched the first episode.
I ended it saying: "Wow! That was really good!" Seeing Ish stare at the smoke from Em's house brought the book's imagery to life.
Of course, by necessity it's been modernized in many ways, but important aspects of the plot remain effectively unchanged. The rattlesnake bite, finding Lucky the dog (Princess in the book), Milt and Ann. Other changes, like limiting Ish's journey to simply Las Vegas rather than Atlantic City, make sense, and are not important to the character interactions. Also, the way the book is structured makes a limited series a great production choice.
I am definitely looking forward to the rest of this series. "World without end!"