Google Adwords Voucher

I have products and I want to sell it in internet, many ways I tried to promote it to increase the sale but no one profitable. Then a friend of mine told me about the cost per click (CPC) system by Google Adwords.

It is really interesting but I found the problem again, I don't have credit card. I was about to give up but Google answered me. Google has Adwords Voucher.

Thanks to Adwords Voucher! Now I can promote my products in internet.