About German mentalitet

As I moving to another unfamiliar country, I dont know  people there, their  traditions or their attitude and expectations from foreigner. Are there special characteristics of German people, that I must carefully approach. Its mostly about their mentalitet or code of conduct ? may be they are sensitive in some things but foreigner doesnt know about it.

What do you actually want to know?
Did you read the wealth of information already available on this forum and elsewhere on the Internet?