Traditional Uttarakhand

Guys I'm a 24 M who has never lived in Uttarakhand since both parents are in the army. Want to learn everything traditional about Uttarakhand specifically since dad is kumaoni and mom is Garhwali. also want to learn the language. suggest places I can read about the history of Uttarakhand (from reliable sources), the really traditional wear especially men, folk songs, etc.