The promoting link is the one provided to you by the product marketer. It is also called affiliate link.
You are supposed to replace "xxxxx" section in your link by your affiliate ID, so you get the commission for the sales.
You can see this pattern in Clickbank & Commission Junction links, in fact this pattern is universal.
If you want to know the precautions you should take while promoting your link, check out my hub.
You'll also get a free e-book on this link.
Contact me if you are still confused.