uneducated about polishing....

I'm a bit confused about polishing...if anyone can answer these questions, I would be very thankful.

I have a 2000 Grand Prix GT champagne/gold color. I have never polished it before. I have read in some forums that polishing takes away the clearcoat. So what exactly is the point of polishing?
How often should I polish my car in order to avoid this risk?
I have a somewhat light scratch in my door panel, would polishing help get rid of this? If so, any brand that is recommended?

Thank you for any help clarifying this.....

I'm a bit confused about polishing...if anyone can answer these questions, I would be very thankful.

I have a 2000 Grand Prix GT champagne/gold color. I have never polished it before. I have read in some forums that polishing takes away the clearcoat. So what exactly is the point of polishing?
How often should I polish my car in order to avoid this risk?
I have a somewhat light scratch in my door panel, would polishing help get rid of this? If so, any brand that is recommended?

Thank you for any help clarifying this.....

Try this, go thru the how to center.
May help you with your "why's"

http://www.meguiars.com/