I am currently working on a course concerning Dalecarlian:
http://www.unilang3.org/wiki2/wiki.phtml?title=Dalecarlian
I am using etymological spelling, so Old Norse Course students won't
have much trouble recognizing much of the features.

Worth to be noted: Dalecarlian has six cases (nominative, accusative,
dative, prepositional dative, possessive dative and vocative).

Regards,
/Sjuler