This is a masterfully written book about the future and how people in the future will be 'trained' to use their mind. Or perhaps not. The story tells about the adventures of fireman Guy Montag who, at a certain moment in his life, starts thinking about his life, the life of the people around him, and about what he does for a living. Once he gets a grasp on that, everything around him changes.
It's an old book (published in 1953), and it is shocking to see how many things in this book are happening now, be it not to the extent that Mr. Bradbury described in his novel. If you are interested in the ways of how censorship is applied and also like a good book, I can recommend this book.