Norwegian is slightly easier for me to learn since I have a norwegian friend. It's also harder to sing in it because I know that she knows how to make napalm and loves the dialect.

@999 THANK YOU SO MUCH! That'll go a nice long way into learning that.
@Mysha I'll have a look at that link, thanks an awful lot. Tbf, I was asking for it when I was listening to Gaate (a folk-rock-experimental band).
@Marje I'm singing in other languages because they're nice songs. I do the same for them as I do with English songs, and find out as much as I can about them. Thanks to looking at Norwegian transaltions, I've learnt that in Norwegian fairy tales, the King lives on a farm as opposed to in a castle. I find searching for the lore of a song one of the great things about learning folk songs.

There's also a standard for phonetics if I recall correctly which I never understood, but my PC does.