If you are planning to advertise on Google, you need to know what you are doing, otherwise you will waste a lot of money and achieve very little.
That said, there two forms of Google advertising.
1). Adsense - Google advertises on your website and pays you when people click the Ads.
2). Adwords - Google advertises your content on its search engine and other people's websites and charge you every time people click your Ads.
If you need more info, help and guidance, get in touch, I will gladly assist.