How do you get money from a car insurance claim?

My car has a broken air conditioning valve. I’m going to take it in to get replaced tomorrow and I’m not really sure what to expect, price-wise. How much does it usually cost to get a car’s ac valve replaced?

I’m carting around my niece next week while my sister’s out of town. I’m getting myself “kid-ready” but I’m used to smoking when I drive. Is it legal to smoke with a kid in the car?

I’m not great with car maintenance and I often forget to do routine things like changing the oil. I tried to start my car recently and nothing happens when I turn the key. My friend told me that my engine may have seized. How can I tell if that’s the case?