I first tried to read the book when I was in high school (in the early 70s) because one of my favorite authors, Nero Wolfe's Rex Stout had said Jane Austen was HIS favorite author. Back then, I found all the discussion of society and marriage and relative wealth, etc, to be nauseatingly trivial. But back then, I didn't get what Austen was really saying. It was her own commentary on those topics and attitudes from a very familiar perspective. Now, having a better understanding of the author's intentions, and the background from which she wrote, I can really appreciate and enjoy the story, whether from the book or the movie.
I highly recommend both book and movie, and Jane's other books as well. And of course, any Nero Wolfe story by Rex Stout!