Some have found moving to another continent a great personal development opportunity that allows one to preserve relationships (email, facebook, skype, phone, viber...)
Although far from experiencing the real thing, these great books can at least prepare one to expect that everything you know, think, believe, expect, trust and normally do, will be challenged:
Culture Shock series
http://www.bookdepository.co.uk/search?searchTerm=%22culture+shock%22+etiquette&search=Find+book
As before, a great personal development opportunity...