Cooking kale is not difficult, but it does take more time than cooking other greens like spinach.
This is because kale leaves are pretty fibrous and tough. One of the best and easiest ways to make a low carb kale dish is to saute it in bacon grease with bits of bacon, garlic and onions.
First, the kale has to be prepared for cooking:
Take on bunch of kale, and wash the leaves thoroughly to remove bugs and dirt. Kale leaves are very krinkly and curly and they do a good job of hiding critters, so this step is important if you don't enjoy bugs in your food.
Shake or pat the leaves dry. Using a paring knife, cut the woody stem out of each kale leaf. These are just too tough to cook and eat. Take the remaining leaf parts and rip them into smaller pieces. Now we're ready to cook.
Kale with Bacon, Onions and Garlic
Here's a recipe for kale chips, which is my favorite way to enjoy kale.
Here's another way to include raw kale in your diet: I have a friend who uses raw kale in "green smoothies". She puts the raw kale along with some fruit and coconut milk in a powerful blender, and processes until smooth. I tried it and it tasted pretty good.