To season a new cast iron skillet, wash and dry skillet. Preheat oven to 450 degrees F or 232 degrees C. In the meantime, slather your pan with 1-2 tablespoons of cooking oil all over pan. Remove any excess oil with a piece of dry toweling. Place the iron skillet upside down over a baking sheet in case there is any oil that drips. Bake cast iron skillet for 30 minutes.  Make sure to ventilate your kitchen well. There can be smoke from the oil cooking in the hot oven. Repeat this process 2-3 more times. Allow the cast iron skillet to cool and it is ready for use.