I just watched Michael’s Cheney’s AdSense videos and here is what I have got for you.

Mirror Google’s policy to have success with them. Google’s policy is 1. Organising world’s content - do this in your site. 2. Don’t be evil.. follow their TOS, it will benefit you in the long run.

Four main aspects for success with AdSense earnings:
1. Content
2. Keywords
3. Ads (Positioning, color, size et al)
4. Traffic

Some Key Points To Remember:

Choosing where to compete is half your success. The single most important factor for choosing your niche market is to select one that you have passion for. Simply by knowing these 2 things (popularity and competition) gives you the definitive answer on the best content to place on your site. Very less website compete for misspelled keywords. For example: “woof picture frames”. Use wordtracker paid version for finding out how much competitors you have for a particular keyword. One of the best ways to get hold of unique, quality content that you can use with your AdSense ads is to buy existing sites. Don’t use adsense-ready websites because it has duplicate content. If you want to buy one, buy a non-adsense website and add ads.