SKOL, just keep walking. You'll notice improvements in your speed and distance as you put in the time. Good thought. I think jogging is unnecessary pounding. As your fitness improves, bump up your walking speed to just past "comfortable" but not into heavy breathing. I like to walk with a beat in my ears--fitness music re-recorded from my favorites. You haven't lived until you've heard "Clair de Lune" played at speed.

Best wishes.