Thistil Mistil Kistil: Volume One by Sarah Schanze
Followed this online as the webcomic. . . .
This is the first five chapters, recounting Coal's funeral and the quest Odin sends him on after.
Which involves directions from the World-Serpent, a fox and an owl, another funeral, grave goods, a rescue, two little scamps, how Coal doesn't need food or sleep, but that doesn't mean that others don't, and more.