The list author says: "If you are looking for a complete, and enjoyable experience into the understanding of the world of the Dark Tower, then this list is for you. Other listamanias of this same subject are jumbled and would unnecessarily have you read 10 of Steven King's other books in between reading books 5 and 6 of the Dark Tower. Nonsense. Once you begin reading the ACTUAL Dark Tower books, there should be as few interruptions in the series as possible to maintain suspense, story and understanding. If you have to read Rose Madder, the Talisman, Bag of Bones, and Black House in between reading books 5 and 6 of the Dark Tower, you have successfully killed the pacing of the saga and are likely feeling that you are now reading as a chore rather than for fun.
That being said, these are the books HEAVILY involved in the Dark Tower Saga and the order in which they should be read, with as few breaks in the timeline of books 1-7 as possible. You may note I do not list books such as Rose Madder (do you need to read an entire book because the city of Lud is mentioned briefly?...No) and From a Buick 8 (do you need to read From a Buick 8 because of the POSSIBILITY that the man driving the car is POSSIBLY a low man?...No.) I have also done away with such shoddy nonsense as the Gunslinger Graphic Novels which, though sanctioned by King, are surprisingly non-canonical.
And now I think I've said my share on this subject, you know why I disagree with other lists on this subject. Now, if you are new to the Dark Tower Series, I wish you the best of luck on your adventures and I envy you for starting down this path for the first time.
(P.S. I have listed some books twice. These have short stories in them that relate to the tower. But not all the stories should be read together, most notably the stories pertaining to Everything's Eventual. You will note that I explain as you go along.)"
"Book 4. And we weren't really even gone long enough to break the flow of the story. You'll notice the Plague world from the Stand in this one...And you didn't have to read all 1145 pages right before this book to break the flow."
"Another quick interlude. Definitely read, "Low Men in Yellow Coats," but also read the rest because it's a beautiful series of stories. Remember the Men in Yellow Coats and Ted Brautigan. You might even spot Randall Flagg/Walter/Marten mentioned within these pages."
"This story deals heavily with breakers and the Crimson King. This story actually takes place chronologically after book 6, where Susannah could still see the light coming from the King's Forge. The destruction of that Forge is told in these pages. "Do I need to read the Talisman first? Nope, because the Talisman has very few DT connections and this story pretty much stands on it's own."
"The Final Book (and one of my favorites in the series). Now you're done. Feel free to research or read some of the other books I did not mention, such as From a Buick 8, Bag of Bones, Rose Madder, but I guarantee you won't get more than a few sentences of connections in each book to the world of the Dark Tower. Don't say I didn't tell you so."
"An excellent guide and companion while reading The Dark Tower and related books. I prefer this to Robin Furth's The Complete Concordance because Furth doesn't include connections from non-Official Dark Tower Books such as Insomnia and Black House."