The unwritten rules that trip up every newcomer — how people greet, whether to tip, how late is "on time", what's taboo, and the gestures that quietly offend. Pick your country for the briefing you want the week before you land.
A practical guide, not a rulebook — norms vary by region, generation and setting, and individuals differ. Aim to be respectful and observant; locals forgive a foreigner who's clearly trying. Confirm anything legal (e.g. dress or conduct rules in conservative countries) with official sources.