Neal Shusterman's website
Neal Shusterman's author website, which includes book information, film news, the author's biography, and interesting videos.
Arc of a Scythe Wiki
https://arc-of-a-scythe.fandom.com/wiki/Arc_of_a_Scythe_Wiki
Though unofficial and incomplete, this is a fan-moderated wiki for the Arc of a Scythe series. The website features character information, links to related sources, and a variety of fan-produced artwork, all of which can be fruitful in exploring the world of Scythe.
As the website encompasses all three books in the series, it contains spoilers for the novel's sequels, Thunderhead and The Toll.
The world of Scythe - an interview with Neal Shusterman
https://www.youtube.com/watch?v=sA6xEszg5EM
An interview with Neal Shusterman about his motivation behind writing Scythe, including the types of research he did and the questions he attempts to address in the novel.