i my experiences a slipping clutch will sound like this....
you start off, car doesn't go right away. it doesn't buck or jerk, it just revs high and accelerates slowly. when you shift, it will sound like you're not letting the clutch out fast enough..... and again rev and not go. it really shouldn't buck or run rough.
a clutch swap is NOT an easy swap, especially for a 16 year old to do alone. if you have some help (and by help i mean someone who has worked on and done major repairs to cars) and you can live without your car for a few days, give it a shot. otherwise, you're going to have to pay someone to do it. and it's not cheap.
i would try to find someone you know that is good with cars who will do it for you on the side.
02 Mustang GT... Tuned by Nelsons. Low 12's, anyone?

.....______
___|______\_____
|/-\_________/-\_|
.\_/...............\_/