Translation of Kopfhaut

I remember that after highschool I went to study English in New York. First I did not know whether the city was right for me cause I wanted a place where I would not feel lost. However, it was the right choice.
Maybe we would need to say install our dictionary as a software? But I would say instead of install, use our dictionary as a software. So bottom line. If I use the singular form for newsletters and websites, I am on the safe side for both?
I've never been to Switzerland, but I'd like to go to the Alps. Until now I was only in Austria and in France. Maybe I will go there, for example skiing in Davos or in another nice mountain village.