Dear Friends.
Google Adsense is good source of income. There are a lot of way to make it work.
Big traffic or niche sites?
There is one site that has huge traffic over one million page view per month and can make over USD 12k.
http://www.tipjunkie.com/
Another free resource to learn the ins and outs of Google AdSense is TentBlogger's A Blogger’s Guide to Earning More with Google Adsense series. If you're interested in getting more details about AdSense, this is a great place to start. It is Free .
More click Here
http://bloggingwithamy.com/can-you-really-make-money-with-google-adsense/