Google Adsense have 2 programs the one that you can start with and another called Premium Adsense to use if you get thousands of hits on your site daily.

So Go and get Adsense on your pages and start to promote it on the traffic exchanges. The adverts try to be relevent to what you have on your site and I have found that some area - subject matters the adverts pay better than other.

You will have to experiment.

David
http://wizardgold.com/payace.htm to get some traffic exchanges to promote your site.