His Dark Materials 01: Northern Lights by Philip Pullman:
Lyra Belacqua and her animal daemon live half-wild and carefree among scholars of Jordan College, Oxford. The destiny that awaits her will take her to the frozen lands of the Arctic, where witch-clans reign and ice-bears fight. Her extraordinary journey will have immeasurable consequences far beyond her own world...
Harry Potter 01: Harry Potter and the Philosopher's Stone by J.K. Rowling:
When a letter arrives for unhappy but ordinary Harry Potter, a decade-old secret is revealed to him that apparently he's the last to know. His parents were wizards, killed by a Dark Lord's curse when Harry was just a baby, and which he somehow survived.
Leaving his unsympathetic aunt and uncle for Hogwarts, a wizarding school brimming with ghosts and enchantments, Harry stumbles upon a sinister mystery when he finds a three-headed dog guarding a room on the third floor. Then he hears of a missing stone with astonishing powers which could be valuable, dangerous - or both.