Hi Valerie,
Checkout
www.in2greece.com and click on the link for food, there are lots of ideas there. Dimitris has a page on this site about eating Greek style - you may have seen it, but it gives some good ideas about how food is served as part of a social occasion, hence the 'mezze', when a selection of dishes are placed on the table for sharing.
My daughter loves serving up Greek dishes back in England, but finds that not many folk share her's and the Greek's passion for such liberal quantities of garlic, which is essential for dishes such as tzatziki. Oregano is crucial too, again, in much more generous amounts than we Brits tend to add!
Good luck!