The winner of the Goodreads Choice Award for Young Adult Fantasy and Science Fiction for 2017 is A Court of Wings and Ruin by Sarah J. Mass. You can find this book at the library in the Young Adult Fiction section at YA MASS.

From Goodreads:

WINNER 71,165 votes

A Court of Wings and Ruin

by Sarah J. Maas (Goodreads Author)
Sarah J. Maas returns as the reigning champion of YA fantasy. She has been a nominee in this category since 2012, and it’s no surprise that Maas has garnered another win for A Court of Wings and Ruin. This is the third installment of her smash hit series about a young huntress embroiled in the mysterious world of the fae. The second installment, A Court of Mist and Fury, was also a winner in last year’s Goodreads Choice Awards.