The most effective possition ads
     If positioned well, these ad formats can increase your earnings significantly. The formats we’ve found to be the most effective are the :
   
  1.336×280 Large Rectangle
  2.300×250 Medium Rectangle
  3.160×600 Wide Skyscraper
 Keep in mind that while these ad formats typically perform well, you should use the format that best complements your pages.

Step by step for adding AdSense to your pages
       For adding AdSense to your pages.You can take it in a few minute
       1.Log in into your Adsense Account by use this URL
                 https://www.google.com/adsense/login/en_US/
       2.In your account page,click on “AdSense Setup”.
      3.Then click “AdSense for Content”.

     4.Choose your Ad Type by click on “Radio Check Box” There have two Ad Type :Ad Unit and Link unit.
     5.Choose Ad Format and Colors.   
       You can customize your ads to fit in with your pages. Use the options below to specify ad size, style, and more.
     …

What is AdSense for Content?
     Google AdSense is a fast and easy way for website publishers of all sizes to display relevant, unobtrusive Google ads on their website’s content pages and earn money. Because the ads are related to what your users are looking for on your site, you’ll finally have a way to both monetize and enhance your content pages.
      The program is free, and combines pay-per-click and pay-per-impression advertising - meaning you get paid for valid clicks on the ads on your site as well as impressions. So …