If you like reading children's classics, here are some recommendations:
The Chronicles of Narnia by C.S. Lewis.
A classic series of fantasy books about the land beyond the wardrobe. Four brothers and sisters
enter a fantasy land where they help Aslan, the lion, triumph in battle
with the White Witch.
Kidnapped by Robert Louis Stevenson
A young boy is sold by his wicked uncle as a slave and is helped by an outlaw.