Leviathan Resources
Websites
Scott Westerfeld's website is enormous, and includes loads of fun information about the Leviathan series and his other books, in addition to a blog, photos, and videos. If it exists and is related to the series, it's probably linked from this site.
This wiki contains detailed information about anything in the series you could ever be interested in—or confused about. Check it out.
All Tumblr posts tagged #leviathan trilogy are available here.
This is the official website of Leviathan's illustrator.
Articles and Interviews
This is the review of an avid reader. It gives pros and cons, so check it out to see if you agree or disagree.
Here's a book review by Austin Grossman, author of Soon I Will Be Invincible.
Video
It's just like a movie trailer, but it's for a book, and it comes complete with a dire-sounding question at the end.
Scott Westerfeld discusses the Leviathan Trilogy with the Science Fiction Book Club.
Scott Westerfeld shows off some of the field research he did for Leviathan.
Scott Westerfeld pitches his book at BookExpo America (BEA) in 2009.
Audio
Leviathan, narrated by Alan Cumming, because who else would you want to narrate it?
A free sample of the Leviathan audiobook's first chapters.
Images
Here are some official pictures of Scott Westerfeld from his website.
This cat totally looks like Count Volger.
See loads of amazing Leviathan foreign covers and other images from the books. Warning: some scrolling required.