Burbage dies on pg. 12
Hedwig dies on pg. 56
Mad-Eye dies on pg. 78
Scrimgeour dies on pg. 159
Wormtail dies on pg. 471
Dobby dies on pg. 476
Snape dies on pg. 658
Fred Weasley dies on pg. 637
Harry gets fucked up by Voldemort on pg. 704 but comes back to life on pg. 724
Tonks, Lupin, and Colin Creevy have their deaths confirmed on pg. 743
19 years after the events in the book:
Ron has married Hermione, their two children are named Rose and Hugo
Harry has married Ginny, their three children are named Lily, James, and Albus severus.
Draco Malfoy has a son named Scorpius
The epilogue shows all of the children boarding the train for Hogwarts together.
The final lines of the book are: "The scar had not pained Harry for 18 years. All was well."
Plot Spoilers
Part of Voldemort's soul was implanted into Harry whenever he used Ara Kadvara on him when he was a baby. Harry then sacrafices himself a la Lilly Potter style, which allows him to kill Voldemort without killing himself. He brings himself back to life using a wand and a rock
Snape went to the good side (Hogwarts, etc.) because he was all emo that Voldemort killed Lilly Potter