#1 The Assassin's Blade by Sarah J. Maas
Prequel to the Throne of Glass series. Series of novellas describing some of Celaena's adventures.
After finishing the third book in this series, it was jarring to revert to how the character used to be. However, my daughter insists that this book provides lots of background which will make the rest of the books in the series more enjoyable. And it did flesh out some characters and background issues.
Joan