if your a harry potter fan and like books about young people and magic, Dianna wynn jones is certainly an author to try.
Extremely funny, dark in places, with a wonderfully offhand writing style, and genre that spans world hopping fantasy, to steampunk, to modern fairy tales, often taking into account some wonderfully weird ideas along the way.
For something Ya her Crestomancy series are worth a look, starting with either Charmed life (going in publication order), or lives of Christopher chant (going in chronlogical order), about an enchanter whose job it is to keep peace around related worlds, including his own, which is sort of like an edwardian version of Britain with steam trains and magic, and occasionally touching on our world.
For something a little older there is her castles series, famously beginning with howl's moving castle (yes, the basis for the Miazaki anime, though the books are very different), a bit mor Ya romance and less of the magic, but worth reading none the less.
My lady and I also just finished her book deep secret, one of only two adult books she wrote, since she tended to believe that books about magic couldn't be aimed at an adult audience (sadly she predated Harry potter), that, along with a sudden wild magic are both also really good, though rather more scatty than most of her output.
If you wanted something a little darker, I can recommend Susanne collins hunger games. yes, these are dystopia rather than magic, but deal with many of the same themes, and work in a much harsher way, albeit be prepared for some shocks and violence and bloody evil monsters.
With our dreaming and singing, Ceaseless and sorrowless we! The glory about us clinging Of the glorious futures we see,
Our souls with high music ringing; O men! It must ever be
That we dwell in our dreaming and singing, A little apart from ye. (Arthur O'Shaughnessy 1873.)