Take some time, read the book, see the movie.
You will find the entire list of nominees here at their official website.
The Descendants, Screenplay by Alexander Payne andNat Faxon & Jim Rash; Based on the novel by Kaui Hart Hemming; Fox Searchlight
The Girl with the Dragon Tattoo, Screenplay by Steven Zaillian; Based on the novel by Stieg Larsson, originally published by Norstedts; Columbia Pictures
The Help, Screenplay by Tate Taylor; Based on the novel by Kathryn Stockett; DreamWorks Pictures
Hugo, Screenplay by John Logan; Based on the book The Invention of Hugo Cabret by Brian Selznick; Paramount Pictures
Moneyball, Screenplay by Steven Zaillian and Aaron Sorkin; Story by Stan Chervin; Based on the book by Michael Lewis; Columbia Pictures