Hey, you like genre-blurring mythical fantasy? Zelazny’s Lord of Light is a classic for a reason. You want some Norse fantasy? Eight Days of Luke by Diana Wynne Jones is terrific, and it was a big influence on me. Or go back further and read Snorri Sturluson’s short, digestible Eddas.
I really like your book, Norse Code. Is there any chance it will come out in audiobook?
Oh, thanks! There was an audiobook, but then it disappeared off bookstore sites and the publisher never responded when I asked why. It's really frustrating.
Ooh, Diana Wynne Jones wrote Howl's Moving Castle!
Yep! Another of my favorites by her is Witch Week.