Well, the book and the film are very different. If I may say so, the film is like a fanfiction :) Sampe plot, but everything is different.
As for the book, it's more for children.
No, what I diskliked in the film was that everything was too quick. and it wasn't credible, I mean it takes years to become a dancer (in the book, you follow the dream (and also nightmare of Done (name of the boy)).