To advertise your business, products, website and lots more with google, you need need to signup under the google adword platform.
What is Google adword?
Google adword is the name given to Google advertising service/network. On google adword you setup what you want to advertise, the format it will be displayed(text,image), the keyword that could trigger your advertisement to website visitors, viewers, you can set country your ads should display to, set price and other factors. It is quite flexible, well monitored, and popular though you will have to pay in the dollar currency.
To start advertising using google advertisement network, visit google adword here to register and start rolling out your advertisement using google adword platform.