Contrary to many people I use soap and if necessary a steel wool, although that is rare. You can dry it on the stove with a warm burner or just the leftover heat from one. Then I oil it and leave the oily paper towel on it when I put it away. (Of course if you stack with other pots with enamel coating on it you might want to put extra toweling between).I am confused about cleaning, if I cook fish in the pan and I do not use soap to clean it before cooking something else there must be a smell/taste of the previously cooked food. Is it ok to use washing up liquid and then lightly oil?
I don't think I've cooked fish in my cast irons but even so, I don't want my eggs to taste like last nights hamburger. So I use soap.
Werlynne, you will eventually find a way to clean them that suits you. It's a bit of trial and error sometimes.
You will always need oil to some extent. Perhaps less as time goes on.