Google Adwords Primer

Pay per click advertising requires you to form a small advertisement
covering barely two to three lines. This carries a headline citing your
keyword. Clicking on this headline provides link to your web site.
Ideally, Google.com offers organic results and paid links for every
search on the web site. Paid links normally appear on the right hand
side while organic results are on the left.
Every time anybody clicks on your paid advertisements at Google site,
you pay a fee to Google. Fees can be anything from .10 cents to many
dollars depending on the demand and popularity of your keyword. You
should target quality clicks at your web site to increase sales and pay
your advertisement costs too.