Harry Potter and the Sorcerer's Stone (Harry Potter #1) by J.K. Rowling
Harry Potter has never played a sport while flying on a broomstick. He's never worn a cloak of invisibility, befriended a giant, or helped hatch a dragon. All Harry knows is a miserable life with the Dursleys, his horrible aunt and uncle, and their abominable son, Dudley. Harry's room is a tiny closet at the foot of the stairs, and he hasn't had a birthday party in eleven years.
But all that is about change when a mysterious letter arrives by owl messenger: a letter with an invitation to a wonderful place he never dreamed existed. There he finds not only friends, aerial sports, and magic around every corner, but a great destiny that's been waiting for him...if Harry can survive the encounter.