Wash with hot water and a stiff brush or non-abrasive scrubber
Use a small amount of mild soap only if needed
Dry immediately and completely
Heat on the stove for a minute to remove remaining moisture
Rub a thin layer of oil over the entire surface
Wipe off any excess oil
Store in a dry place
Re-season if food starts sticking or rust appears
Avoid soaking in water
Avoid the dishwasher
Avoid cooking highly acidic foods for long periods in an unseasoned pan
Use wooden, silicone, or metal utensils carefully
Clean off stuck-on food with coarse salt and a scrubber if needed