I read it in this order: Cinder, Scarlet, Cress, Fairest, Winter, and then Stars Above. Cinder, Scarlet, Cress, and Winter, are all the main series. Fairest is the story of Queen Levana, which I would recommend reading before Winter, since Queen Levana has a big part to play in Winter. Stars Above is a collection of short stories, which I read all at the end, even though they take place in different times in relation to the whole series. I wouldn't recommend reading Stars Above first because it has some spoilers in some of the short stories if you haven't read the whole series yet. I hope this helped, and I am glad you decided to start reading the Lunar Chronicles!