Chapter 1 - "Owl Post" - In which we are reminded of Harry's previous adventures and told of his summer holidays, he receives birthday cards and presents from his friends, and Harry learns what Ron and Hermione did during the summer.
Homework at Midnight
We learn about the [Dursleys] and their having taken Harry's schoolbooks away for the summer.
Looking out the window, Harry spots Hedwig, flying toward him with another owl and carrying an unconscious Errol between them. They are each carrying packages, and one of them also has his new Hogwarts letter.