The Sword of Truth series! If he haven't read it yet, he will love it. You will find it under Fantasy/ Sci fi. The first book in the series is Wizard's first rule. They are about a dozen books in the series. It's the classic epic story of a young man who is a woods guide and eventually goes on to find his destiny. It's really good, i highly recommend it. It is also the basis for a popular T.V series called Legend of the Seeker. (Even though they have nothing much in common. Good luck on the book hunt.