A good site for Greek food essentials – maintained by a non Greek is www.greecefoods.com . There you can find a primer in Greek food.
Another worth to read site is http://www.eatgreektonight.com ; there under the following link http://www.eatgreektonight.com/recipes.cfm you can find several recipes.
A further site is http://www.greekcuisine.com/ . A usual problem is the use of materials and ingredients that are not Greek at all. For instance we found a recipe for ‘baked spinach with three cheeses’ – one of which is … Edam (which according to wikipedia http://en.wikipedia.org/wiki/Edam_(cheese) is a traditional Dutch cheese).
www.greek-recipe.com/ is also worth to visit – there amongst others there is a list of Top 10 most read, Top 10 most voted and Top 10 best rated recipes.
Finally, we rather think that the best source for accessing Greek food essentials and representative recipes is Wikipedia: http://en.wikipedia.org/wiki/Greek_cuisine
Closing this section, and in order to justify its title (cultural links) and save ourselfes from promoting gluttony we mention two of the very best private museums in Greece: the Benaki museum http://www.benaki.gr/index-en.htm and the Museum of Cycladic Art http://www.cycladic-m.gr/ .