i would to suggest you to follow with commision junction in order to get affiliate code for you advertising in Adwords,
once you get approve from cj you may keep on getting advertiser mail in your email box.
once you apply for particular advertising company which is in cj affiliate program then you must apply for their service approval first. after that you can go ahead to promote with google adwords program. this is PPC Service Provider.
earn when someone make sale from your cj link.
i should say that cj and adwords work succefully.