After reading many posts regarding changes from the book, I thought that I was going to walk away disappointed. Instead I was very pleased with how the movie played out. Most of the pertinent story was covered and I can understand the need to trim it down. The only thing I think would have been better is if they had shown more of the pensieve flashbacks. It's going to be hard to make the jump to what the horcruxes are without the back story of Voldemorts thievery of Hogwarts founders items. Perhaps we'll see them as flashbacks in the first part of the next film.