Denmark is really responding to adversity right now. They are dangerous and motivated and will be a tough out.
I don't understand what that means. Do you mean you speak another Nordic language, as opposed to English?
I'm assuming by the bolded, you're referring to Nordic people speaking English to other Nordic people, not to people like me where English is their native language?
Yes, speaking to another Nordic person. Hm, I was perhaps a bit harsh to say that only lazy persons switch to English; we all have different interests and the value of easily understanding another dialect might simply not have occurred for some. And naturally it is much more difficult, for example, for a Swede to understand Danish if he has never heard it before.
But today it is easier than ever to get Danish and Norwegian media in Sweden. When I grew up, the only Norwegian tv-show I saw was Brødrene Dal:
I don't remember any Danish.
Today, it seems there is constantly a handful of Norwegian and Danish tv-shows on. One I like is the Danish Badehotellet.
Apart from that there are a number of joint productions, and Swedish shows are shown in the other nations. The biggest "Swedish" talk show is also hosted by a Norwegian.
With a computer you also have Nordic papers just a click away.
The only other thing you really need is to try to speak in a somewhat proper way. I'd say that it is a good idea to somewhat switch register, and often you do that without thinking about it; like, you don't speak at the university like you do in the stands.