h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

A great way to learn Norse Mythology is through Peter Madsen's Valhalla comic books (or graphic novels or whatever you want to call them). They're guilty of the same simplification I complained about in a previous thread, but they are also mostly true to the source material and retell the well-known (to some) stories of Thor, Loki and Odin in a funny and visually pleasing manner.
The only exception is the story of the jotun child Quark who had a small role in the animated movie Valhalla and has his story told in one of the books.