Re: How to set up ad campign for site?
Before setting up the campaign inside AdWords, you need to have at least the basic understanding of how this advertising system works.
You can go through this basic PDF as a beginner's guide: http://static.googleusercontent.com/media/www.google.com/en//adwords/pdf/hc/growing_adwords_en.pdf
Then, this help center starter will assist you kick starting your campaigns: https://support.google.com/adwords/answer/1704395?hl=en
Best of Luck and let us know how it goes!