Let me sell you on not reading it (yet): it's two extremely well crafted and lovable fantasy books and some beautiful novellas, but the author will (likely) never finish the series and has been pretty awful about it. It's been well over a decade, his editor has called him out on not having written anything in that time, and there have been some other controversies such as repeatedly using the promise of progress on his book to raise money for a charity he runs but then not delivering on those promises.

The books are a trilogy and not satisfying without an ending that may never come. If he finishes this trilogy then it's a must read. But until then it's a cautionary tale.