The sword in the stone.

The sword in the stone is a good albeit long read. It is much better than the disney movie, but it basically is the young life of a child most people call Wart, while his real name is Arthur. He is trained in much and fights monsters and travels places invivibly, and many other things with the magician, living backwards through time, Merlyn. It is the first in a seiries of 4 books.