is there a such thing for free google ads? I have seen some programs advertising that you can get google adwords for free. is it a scam or not?
They are either selling vouchers - which may or may not be valid, or it's that silly scheme from about 2 years ago, which was an arbitrage plan, and in the small print said itself you couldn't actually get ads for free.
You cannot get PPC ads for free from any search engine. You can get vouchers/coupons for a certain amount but that's short term. What Magda said is correct. Basically a scam since the book tells you to do arbitrage to cover your PPC costs, which it doesn't by the way.