Well, everyone has their own taste and preferences. I, personally, loved TKaM. It was the only book I was forced to read in high school that I enjoyed.
It's a really good book! The writing is really enjoyable and funny.
I'm not going to give the plot away to you, but I can tell you it's about the life in the South states of the USA. A little girl, Scout, tells the story of her summer games with her brother and a friend. We also learns things about their father's job as a lawyer, and the prejudice he's got to face when he defends a black man.