Welcome to the forum.
Well, the healing process truly depends on each person.
This will give you time to rest, deal with any pain you might have, and to heal properly (assuming no difficulties arise after the extraction).
Also, when you get a tooth pulled, you will have a blood clot that will form in the pocket of where the tooth once was (this is what SHOULD happen). The blood clot is VITAL to the healing process. For a week or two, you need to be careful. Do not drink from a straw, smoke cigarettes, or drink hot fluids. This can cause the blood clot to come out and create what is called a "dry socket" which can be EXCRUCIATINGLY painful. You CAN drink warm fluids, just not hot. If you happen to be a smoker, try to cut down as much as you can. If you smoke a cigarette, take a piece of gauze, cut off a strip, fold it in half, and tuck it up where the tooth was pulled. This will at least be SOME protection for the blood clot, though it still doesn't guarantee that it won't come out.
Using an ice pack on that side of your face will help with pain. After the first day, you can alternate between cold
AND warm compresses.
Of course, be sure to follow any instructions your dentist
will give you.
I hope this information has been both informative and helpful for you.