The Eternal Hourglass (Magickeepers #1)
by Erica Kirov
Nicolai turns 13 and is whisked into a world of real magicians - his family. He starts learning how to do real magic (which I wish had been explored further), then faces the dark magician Rasputin.
I quite enjoyed the Russian angle - I haven't read any JUV/YA literature that contains this. I love learning about new things, and this just starts to touch on a vast new area!
Plus it's on the short side, so it was a quick read. I'll be reading the next in the series.