The second thing that you will need to do to prepare yourself for college is get in shape. To be in the best physical shape it includes not only lifting, but it also involves running and other types of cardio. Any strengthening program will include the cardio aspect in the training.
There are different things that can be done for cardio, and unless your college sport is cross country, there is no need to go out and run miles and miles every day. Your cardio training should be a good mix of sprints getting your heart rate up high, and some low intensive cardio to get your body in shape.
Some other things that can be done are riding a bike, elliptical, treadmill, running stairs, running hills, running long distance, short sprints, long sprints, track workouts, and swimming workouts.
A lot of programs will have you wear a heart rate monitor. It is important to know where your heart rate is at when you are working out. For low intensive cardio you don't want your heart rate to be above 130 beats per minute. When you are doing sprints you want your heart rate to get up around 180bpm. It is important when doing sprints to allow yourself enough rest to let your heart rate drop down to below 140bpm before sprinting again.
Doing a regular conditioning program will not only get your body ready for Division I athletics, but it will also keep you healthy and happy. Exercise releases endorphins which make you feel happy. It can get rid of stress, and high school athletes are under a lot of stress and pressure when preparing for college.
I know it can be hard to motivate yourself to go out and exercise. Check out this site for some helpful hints: http://thejoggerlog.blogspot.com/2009/09/30-things-to-do-when-you-are.html