Starting working from a list. and complete everything on the list that will make you rich in your time frame. Also think Big
Create lots of blogs with website link. put on middle of blog . if you want more money you have to create at list 2000 blog and join in groups like yahoo,google,in etc.......
click on the search button and read post of valuable users of dp old posters are the best information you can find, unlike this year, dp sometimes full of same topic with less real replies
best is to attract US traffic, US traffic is high paying for adsense... try to update ur content but dont change its category ,
I think you must submit few article in article directory and join yahoo groups and other socil networks and forum according to your niche . Then promote your site in those place and I am sure this will help you to generate good revenue .