How does one properly cook meat?

I am a vegetarian and have been since before I was cooking for myself so I have no idea how to cook any kind of meat. It’s easy to cook vegetables as no one gets sick if they are undercooked and no ones gags if they’re overcooked.

Why would a vegetarian want to know how to cook meat? Well, I’m planning on having children one day and I figure I should learn how to cook meat for those inevitable times that they will want bacon or chicken nuggets. I figure for the most part my SO can make them the meat stuff but I’m sure there will be times when he’s not home and I have to go to the distance.