I've cycled to work and back (18km/day) for years ... now I'm interested in running (as well as the cycling). I've used treadmills in the past and can alternate run/walk for 60min no problem. I understand (and have learned the hard way) that treadmills are not the same as hitting the pavement. I weight 200lbs / 5'11''.

I ran 1.5mi in 12 minutes 2 days ago and woke up to very sore quads (i.e. stairs are a real challenge, but I can still cycle). I'm guessing it was because of bad form/heel striking.

I learn visually or through training in person... what are some tips to get me started? I believe I need help mostly with my form. Help!! (and thanks in advance)