The first book in the Harry Potter series is called "Harry Potter and the Philosopher's Stone" (or "Harry Potter and the Sorcerer's Stone" in the US). The first chapter is titled "The Boy Who Lived".

In this chapter, we are introduced to the Dursleys, a seemingly ordinary family living in a suburban town in England. They are woken up one morning by the sound of owls and news reports of strange events happening all around the country. The family is concerned that their nephew, Harry Potter, will be involved in these events, as they believe he has a connection to the wizarding world. They recall how they had reluctantly taken Harry in as an infant after his parents were killed, but had kept him hidden away in a cupboard under the stairs, hoping to suppress any magical abilities he may have inherited from his parents. The chapter ends with a mysterious figure delivering a letter addressed to Harry Potter, which the Dursleys are determined to keep from him.

Overall, the first chapter sets the scene for the rest of the book and introduces readers to the world of Harry Potter, as well as the characters and conflict that will drive the plot.
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