Circuit breakers

Do you have replacement circuit breakers? I don't mean, "You do know how to flip the circuit breaker back on, right?" (I recently was involved in a "hilarious" incident where the entire house's pipes almost froze because a grown adult did not know how to turn a circuit breaker back on or even what a circuit breaker was. Yes, such people not only exist, they often survive into adulthood.)

I mean, "Do you know how to replace a defective circuit breaker?" Without the internet? Great. Do you HAVE replacement circuit breakers at home? The correct ones? Do you KNOW they're the correct ones (as in, are the part number and manufacturer identical)? Keep in mind, they cost about $5 each. This is not a major expenditure.

I prefer to leave any major plumbing and electrical to the experts because once you get in over your head, things tend to go bad fast. But please take the time now to familiarize yourself with how its done. In the middle of a blizzard or something like that is not when you want to be staring at the panel, "I bet it's actually a very straightforward procedure. I sure wish the furnace breaker wasn't the one that went."