The first part of learning to run is to build up a solid walking base first. This helps starts the adaptation of your leg muscles and tendons to the impact of running. You should be able to comfortable walk 5K/3 miles before starting to run.
When it's time to start transitioning to running, I would definitely recommend a Couch to 5K program. These programs work through progressively increasing intervals of running and walking. www.sparkpeople.com/resource/fitness_artic
And keep your running pace down - at this stage it is more important to get used to the motion of running, rather than worrying about your speed. Once you are running continuously comfortably, then you can work on speed.
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.
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