After seeing the movie, I really wanted to read the book and I'm not disappointed one bit.
I love the writing style. I love that Watney isn't an all serious scientific stick in the mud, that he has personality and because of that, you WANT him to make it.
I love the mentality of the book... when things blow up in your face, take a little time to freak out and spout out expletives and when you finish, figure out the solution. I need to remember that in real life.
I really liked the style of the book. I'd say about 80% of the book are Watney's log entries, if you liked that part in the movie, you'll love it in the book. There's a lot more foul language, just so you're warned, but it's so worth it.
I think I want my dad to read this one!!