Welcome. The app really works if you put in the time. I started out in pretty bad shape - I've lost 25 lbs and run over an hour (I couldn't have imagined that when I started).
Aside from running, logging what I eat in MyFitnessPal has helped out significantly since I'm aware of how much I can eat to lose weight. It also helps in the sense that I don't feel I'm dieting, I'm just making better choices about the amount and what I'm eating.
Post up your workout status as you complete days. Don't worry about the pace, just follow the program - the pace will come.
You can do this!!