From the Corpse of Ymir is a primer on working with the Runes of the Elder Futhark. It is a condensed collection of notes on each stave, the Nordic Creation myth, and how Isa and Kenaz make up each Aett. The PDF can be accessed by clicking the picture below.
The Dumped Clutch Ruleset of the upcoming TTRPG Black Tides and War Rigs can be accessed by clicking the picture below. The full rules are set to be released this Fall.