I think and errand service is a fantastic idea. I`d start by jotting down some of the services you would offer and ask around to get an idea of what people would pay for such services.
Are you targeting businessess or individuals? Maybe you could market yourself as a `personal assistant` depending on what your responsibilites would be.
I`m sure you`ll find tons of helpful information here. Good luck!
on my rough looking site http://oncall.piczo.com . I have put down what services will be provided and rates. I would really like to target individuals. and yes I would love to market myself as a personal assistant that is actually what I would love to be but i never new how to get into the field so I had decided to start my errand business.