Similarly, if you receive a gift, accept it with both hands. Yet another aspect of gift giving protocol is timing. When conducting business in Europe, it is better not to give until after an agreement has been signed. In Japan and other Asian countries, gifts are given at the end of a meeting. While in Asia gifts are not usually opened in the presence of the giver, in Europe and North and South America, they probably will be.
People are the best resources for learning gift giving customs.
If you live abroad, ask your friends and neighbours for advice. If you do not live abroad, talk to people who have lived in your destination country or consult a book about the local customs.