In the Lose it! Tone it program there are a couple of running sessions. I started with that program when I first began using Skimble and I liked it. If you search for running in the workouts section there's plenty.
A lot of people start for instance with walking for two minutes, jogging for one minute and so on or something similar. Another approach is to have time blocks of for instance three minutes. You start by jogging for as long as you can and then walk until the end of the time block. When the next time block starts, repeat.
Do some kind of short warmup and stretching before and you're good to go! Good luck!