Learn all that you can about the country This includes local customs (very important), language (even more important), and the areas that make up the cities and regions. It is vital to know whether you think you can handle living under different laws, customs and routines because these will affect your everyday life. For example, stricter regulations about what you can and cannot do in a country like Singapore (down to not chewing gum in public at the risk of being canned) may cause a freedom-loving US citizen to feel constricted.