Dear Andrea, :)
Since you hadn�t said what countries you need information about I just looked for the ones that came to my mind immediately. Should you need information on a specific country, please, write again! ;))
Here are some links which could be useful for your research:
Germany
http://watzmann.net/scg/faq-2.html
The UK
http://www.woodlands-junior.kent.sch.uk/customs/
The USA
http://www.americanfamilytraditions.com/
Canada
http://www.canadianliving.com/family/parenting/20_family_traditions.php
Italy
http://ezinearticles.com/?Italian-Family-Traditions---Mothers,-Sons-and-Marriage-in-Italy&id=4074668
Spain
http://www.justlanded.com/english/Spain/Articles/Culture/Social-customs-in-Spain
http://www.californiamall.com/holidaytraditions/traditions-spain.htm
http://www.mapsofworld.com/spain/traditions-in-spain.html
http://answers.yahoo.com/question/index?qid=20081215083147AA6ZwPp
http://www.kwintessential.co.uk/resources/global-etiquette/spain-country-profile.html
France
http://www.understandfrance.org/Paris/Life2.html#ancre177706
Argentina
http://sociologyindex.com/argentina.htm
http://www.everyculture.com/A-Bo/Argentina.html / very long page; scroll down to �FOOD AND ECONOMY�
http://www.the-allure-of-argentina.com/argentinatraditions.html
Arabia / Saudi Arabia
http://www.traderscity.com/abcg/cultur11.htm
http://www.asiarooms.com/en/travel-guide/saudi-arabia/culture-of-saudi-arabia/customs-and-traditions-in-saudi-arabia.html
Good luck and have a great day � Silke