+1 to what Sixgun said. You've got to build a good base before you start getting into the more strenuous stuff like speed and hills. It's like learning the fundamentals of safe weapons handling before you get into shooting on the move or secondary weapons transistions.
A good rule of thumb when doing your base runs is to trot along at a pace that allows you to maintain a conversation (if you're running with someone; otherwise, imagine yourself talking to someone alongside you--actually talking to no one while running is often seen as a sign of lunacy).
Try to start off by doing a mile at this pace. If that's too easy, then do more but probably no more than 20-30 minutes to start off with, even though you're young and resilient. Running for a certain amount of time is probably better for those just starting a running program as you should be concerned primarily with putting in the time on your feet and getting everything accustomed to the pounding. (Remember to run in dedicated running shoes that you get at a specialty running shoe store, not a department store or general sporting goods store. And don't wear the shoes for anything but your runs.)
Beginners probably shouldn't run every day; doing so invites an overuse injury. Every other day should be good. Work up to where you can go 30 minutes four times a week (but don't increase the time spent running by more than 20 percent). That's said to be a good goal for those seeking to be in halfway decent shape, and you should be able to get there in three to six months.
If you feel like taking it to the next level and racing or doing longer distances, your body will be able to handle it better by having this base down. Good luck.