They're not that much effort honestly.. but they do require a little more care than your average TFAL..
I've been cooking on cast iron for years. There are some cast iron snobs on line who get obsessive over their seasoning and treating techniques, but honestly as long as you clean it properly they're really not a big deal, and food most certainly does taste and cook better.. and you know you aren't getting some weird teflon coating stuff in your food
Assuming your cookware is already seasoned (most are, if it isn't then follow directions for that), then you can generally cook with it like any other piece of cookware, with the added benefit that you can toss the whole thing in the oven without melting a plastic or rubber handle grip off. Yes, you will need to preheat it first.. I usually toss mine on the range on medium heat first while getting other ingredients ready.. that gives it a solid 5 minutes or more to come up to temp
Afterwards, to clean..: if you cooked something such that food burned onto it then simply deglaze it with something (depends on what you cooked, but a splash of red wine or broth are my go tos, in that order) then scrape the stuff off with a spatula. After that, a quick wash in some warm water, and mild soap (if absolutely necessary) and you are in business. You shouldn't have to go crazy scouring it... if you do then you'll need to reseason. Eventually with enough use you'll have a beautifully seasoned pan. I can cook scrambled eggs on mine and nothing will stick, and the eggs are delicious. A quick rinse in warm water and a wipe and we're done