The Dark Is Rising: The Grey King By Susan Cooper

Merlin and legends of King Arthur, power and magic, light vs dark and modern life and raising sheep and sheep dogs blend together to have an adventure in the land of Wales.  Sprinkles of Welsh words to give this story some grounding makes this a magical read.  Enjoy.

Young Merlin Trilogy: Merlin By Jane Yolen

The story continues in another short story.  This gives Merlin a back story.  Enjoy.

Young Merlin Trilogy: Hobby by Jane Yolen

An abandoned child who lived ferrel in the woods and then finds a home and adopted by good people.
Now the story continues and the boy must move on and into the city he goes.  He meets dangerous people, from thieves and performers to dukes and soldiers.  It's a good read.  It's a short read.

The Young Merlin series: Passager by Jane Yolen

It's a quick read about a ferrel child who ends up with the name Merlin.  It's a simple yet well crafted story that gives us a bit of the back story of Merlin.  It's a good read.

Frogkisser! by Garth Nix

It's funny, it's an adventure and a whole lot more.  You can't go wrong with a Garth Nix book.  Enjoy! Fine for any school library.

Merlin by Stephen R. Lawhead

Taliesin by Stephen Lawhead

If you are a fan of Merlin, Arthur and the knights of the Round Table, then this gives you the backstory of how it all came to be.  It is a great read to enjoy with some well research historical elements to bring authority to the story as well as many dreamy fantasy bits as well.  Also, if you enjoy Christian reading, then add this to your reading list.