I was very careful when I first started this book. It was shortly after the huge disappointment that was Under The Dome and I was torn between not reading another tome from the same author (at least for a while) and Time Travel. As usual, time travel won.
But in this case, I'm so glad it did. It was a wonderful novel. Jake wants to prevent the assassination of JFK, but this means that he will have to spend several years in the past. Obviously, during that time he does more than just his mission, and those things are basically what makes this book so awesome.
If you never tried a Stephen King because you're afraid that it is horror. Don't worry, it is not. If you're afraid to try 11/22/63 because King always writes terrible endings, don't worry. Considering it's a King, the ending is really good too.
I don't want to say too much about it out of fair to spoil some things. So, I'll only say, check this book out, it is one of my favourites.