Here are some other titles you may like:
Sabriel by Garth Nix.
Sabriel, daughter of the necromancer Abhorsen, must journey into the mysterious and magical Old Kingdom to rescue her father from the Land of the Dead. The first in a trilogy.
Revenge of the Witch (book 1, The Last Apprentice series) by Joseph Delaney.
Young Tom, the seventh son of a seventh son, starts work as an apprentice for the village spook, whose job is to protect ordinary folk from "ghouls, boggarts, and all manner of wicked beasties."
The Lightning Thief by Rick Riordan (Percy Jackson & the Olympians, bk. 1).
Twelve-year-old Percy Jackson learns he is a demigod, the son of a mortal woman and Poseidon, god of the sea. His mother sends him to a summer camp for demigods where he and his new friends set out on a quest to prevent a war between the gods.
The Ruins of Gorlan (book 1, The Ranger's Apprentice series) by John Flanagan.
When fifteen-year-old Will is rejected by battleschool, he becomes the reluctant apprentice to the mysterious Ranger Halt, and winds up
protecting the kingdom from danger.
Dragon's Blood by Jane Yolen.
Jakkin, a bond boy who works as a Keeper in a dragon nursery on the planet Austar IV, secretly trains a fighting pit dragon of his own in hopes of winning his freedom.
A Wizard of Earthsea by Ursula K. Le Guin.
A boy grows to manhood while attempting to subdue the evil he unleashed on the world as an apprentice to the Master Wizard. The first in a series.