Whats the easiest scandanavian language to learn?

Finnish is actually not technically a Scandinavian language, it belongs to the Finno-Ugric family and is not related to the Indo-European languages. I have done a little bit of work with the Scandinavian languages, and I would say they'd all be about the same to learn, but I might recommend Swedish or Norwegian because they have the best aesthetics. I am fluent in German, and would recommend it. I don't know much about Russian, but I do know that if toy are looking at it from a practical matter, Germany has the 3rd highest GDP in the world (behind only the US and Japan), but Russia is on the rise. Either one is a gateway to learning numerous other languages. You just need to think about if you want to focus more on eastern or wester Europe. German would be a great language if you already speak French.