Hmmmm I see you want to be a runner - thats a woo hoo 4 u! I started from gasping up stairs to completing a half marathon this year. There are alot of great running groups on SP. i co-lead the Half Marathon Sparkteam. Other great groups are the C25K groups, rookie running group, Roadrunners and the list goes on. they are all great.
lots of quality people there to help you along your way.....but dont forget about your class team! lol