Re: Give me promo code? please
This is AdWords Community. You won't get any promo codes here. The fact is when the advertiser signs up for Google AdWords, then the sales Team from AdWords might provide you with the promo code, if some offer is running in that particular country.
I still found one offer for US, Canada advertisers, which you can read here: http://www.google.co.in/ads/adwords-coupon.html
Make sure that you adhere to the policies and Read Terms/Conditions properly before redeeming any promo code.