Really fun read for in between. The Gospel of Loki serves as a nice take on the most important Norse myths and tells you the stories of Asgard and the Nine Worlds from an interesting point of view.
At school I studied the Greek mythology most, and only tangentially got to know about the Norse mythology through living in Norway and reading the Thorgal fantasy comics and Tolkien's work. This gospel presented a nice update on some of the most famous stories and characters.
Fun and interesting read, but don't expect any fully detailed mythological stories or thrilling passages.