Cast iron can used on the stove, in the oven, and on a camp fire. It is nearly indestructible.
I recently found two vintage skillets at my favorite junk store: a 10" and a 12" inch. There was nothing wrong with them...at least, nothing a little scrubbing and re-seasoning could not handle.
I basically do what this man does in the video. Because I am a lazy woman, I'll let him tell you, instead of typing.
Although I do scrub with salt and oil, first.
And the butter is key...