Databases and eBooks
Even though the information is not organized by region, you will find interesting facts you can weave into your postcards. You'll find tidbits about food, the dating scene, etc.
CultureGrams -Use the pull down menu located in the upper left-hand corner of the screen. Pay special attentions to the Customs & Courtesies and the Lifestyle section. You can even find a currency converter here.
World Food e-book
There are many travel sites on the Internet but they are not all created equal. Many want to sell vacation packages and include information that you do not need or is not very reliable.
Many guidebooks provide links to reliable sites for city tourist offices (Office de Tourisme). Many towns and tourist destinations have their owns sites and most contain an English language version.
Fodor's France - publisher of quality travel guides
Frommer's France - publisher of quality travel guides