If you want to re-season your pan in the oven, use a cloth to coat all surfaces with a thin layer of neutral cooking oil and rub off any excess oil with a fresh cloth. Then, throw it in the oven at 500ºF for one hour.
If you want to use the stove, first heat your pan over a low to medium heat. Next, use a cloth to coat all surfaces with a thin layer of neutral cooking oil and turn the heat to high. Heat the pan until it starts smoking and keep heating it until the pan stops smoking. Your pan will be hot, so remember to use a mitt (we prefer silicone) when handling it.