If you have the opportunity to work with a business mentor then I would grab it with both hands. Some people get offered a mentor as part of a training or back to work program they are taking part in whereas others actually pay people to mentor them. A mentor can be extremely helpful to your and the way in which you can run your business or progress up through the company you are employed by.
To get the most out of your mentoring sessions, both parties must be fully committed and actively involved. When starting out be sure to have clear, defined goals in mind. When you have goals in place, be sure to revisit them from time to time to check that you are making progress.
Be sure to discuss exactly what you want from the mentoring, should it be advice on how to build up customer relations ships, advice on industry specifics over an over of business in general.