Go buy a bag of Nestle's Semi-sweet Chocolate Chips and use the recipe on the back of the bag. I do have a couple tips though for making them a bit better.
First, I always use butter. Always. Everything is better with butter, especially cookies, and I really do think that the flavor is just better with butter.
2nd, I double the vanilla. I think the little bit extra just smooths out the baking soda and salt and makes the cookies taste a little better.
When you add the eggs you want to mix the mixture until it gets a little fluffy and almost starts to form peaks. The you'll add the flour mixture. This is, in my opinion, the most important part. The batter will be too thin so you will need to add extra flour. How much really depends on the size of your eggs and how much liquid they provide to your dough. Try adding an extra 1/4 cup and then give the dough what I call The Pinch Test. Take a pea size of dough and give it a little pinch. It should still be moist, and yet dry enough that when you separate your fingers, the dough stays behind. If it's too squishy add a little more flour and test it again until you're happy with it.
OXO Good Grips Cookie Scoop and I use the medium sized one. I like using a scoop to portion them because then they are all the same size and bake more evenly.
Of course it's also possible that I just have a magic oven!