By reading up on a country's customs, traditions, and etiquette, you will not only fit in better, but it also shows respect for the locals of the country you are living or going to live.
"Hosts and hostess should behave in such a way that the visitor feel at home" (J.S. Farynski)
The Etiquette can change from country to country, but the guiding principles are universal and always remember the fundamentals of good etiquette: Respect, Consideration and Honesty. Those fundamentals and a smile can go a long way when it comes to living abroad. What might be perfectly acceptable in one country, might be totally taboo in another.
In Japan it's not only acceptable to slurp the noodles in your soup, but it's considered good table manners to do so. On the other hand, if you're enjoying a nice bowl of soup in England, slurping is considered rude and would seem rather uncultivated!