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Harry Potter - no need to say that those are the best books in the world.
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The Inheritance Trilogy - by Christopher Paolini. The first two books were 'Eragon' and 'Eldest', this last one came a few time after HBP. It's about a teenager boy who finds a Dragon egg. His adventures on Alagaesia start from that point. As you can see also a fantasy trilogy, a great one, I must add.
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The Sevenwaters Trilogy - by Juliet Marillier. This trilogy is already complete. The three books are:
Daughter of the Forest, Son of the Shadows, Child of the Prophecy (from the first to the last). It happens in the Celtic time. In each of them the main character is different, a different family member of the same family, but always girls. It talks about a Prophecy, war, forbidden love, friendship and so on. It also has got some magic here and there, well almost in the whole book, since there is a dark witch, druids, spirits, etc.
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All Dan Brown's books -
The Da Vinci Code and
Angels and Demons are two of the four books this amazing writer has already written. Unlikely the others I posted this one doesn't include any magic. (too bad

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