I own all of Stephen King's books. What I like about them is the back and forth between the characters. King has a bead on how people react to things and his dialogue is killer.
That being said, I have never liked any movie or series based on his work. For some reason, it just doesn't translate to the screen after the writers rewrite everything. A few minutes into Under the Dome, I found that to be true again.
“The Stand” was the closest thing to a successful book to screen attempt in my opinion.
Re: Roku
Easy set up as the on screen prompts walk you through it. You do need a TV with an HDMI cable input (and an HDMI cable, since the Roku does not come with one). One time cost, no monthly fee. You will need a wireless wifi router to run it.
We watch a ton of movies and older TV shows on Netflix ($8.00 a month) though the Roku. And there many other services both TV and radio and many are free.
Well I didn’t set up the Roku, but I use it, and it’s pretty good. Using it is easy enough. You may want to have someone else set it up.
I also like many of King’s books, and think he is a good writer in general. “Stand By Me” is really good.