Being from KY and having a grandmother from the "country" I have had the opportunity to eat Kale. It is typically prepared like any other type f "cooked greens" to me Kale is best prepared with onion, a ham hock, salt and pepper and then served with a dab of vinegar to taste. BUT thats the way I am used to it being served....its one of my favorite "go to" foods. You can steam it as well. I tried eating it raw in salads like I do baby spinach, however it is firmer and a bit too bitter for my liking in salad, but I know people who eat it that way to. Its really good in soups.....basically anywhere you can use "greens" ie: spinach, collard you can use Kale and its VERY good for you!
Hope that helps a little! ;-)