I've read one book that I really enjoyed. It was the Jurassic World junior novelization. I'm not much of a reader but this book was one I stayed up late reading. The book keeps to the movie, with any occasional "PG-13" cursing removed for cleanliness. I read the book before watching the movie which was a good idea, and I scanned through it while seeing the film. The dialogue is barely simplified, and it seems that it all came straight from the movie script. There is some violence in the story, all dinosaur stuff has that, right?
Overall, the book was great and kept my attention. The suspense isn't too driving, but it makes you want to head on to the next chapter. I'd totally recommend this book if you like dinos and action!