I just finished it. I cannot presume to praise this book. I will read it another hundred times in my life, and my sons will know Hylfing second only to Middle Earth and Narnia. Magnificent.
Advice: refresh yourself on the last few chapters of 100 Cupboards before plunging in, and when plunging, pay attention. There are things I will be pulling out of this book for years: the christening? Nearly unparalleled. N. D. Wilson refers to Tolkein as incomparable, and I agree. But the day may well come when Nate is second only to Lewis in those that have aspired to create worlds that may approach Middle Earth.