Well the grammar is easy because there are very few short words like articles and stuff, and it's very similar to english and german too. The verb system is nothing fancy either.english and german.
i understand and can read a bit of french and italian, but really only parts of it.
i´d love to learn any skandinavian language, but its pretty hard, if u cant use it regularly.
But there are (in swedish at least) a lot of unwritten rules that you simply learn from speaking it and the way of speaking is very sloppy compared to how you write - like ignoring sounds and words melting together
At least that's what I find different from swedish and other languages. But it's a pretty straight-forward language and much easier than say french - whose grammar does everything to fuck your head up whenever possible