As You Know, Adsense is one of best ad network available today for bloggers.
Setting up adsense ads for WordPress is not a nightmare. You can too setup adsense ads for WordPress without any plugins just by adding a widget.
How to Add AdSense Code to WordPress Blog:
First of all login to your adsense account and create a channel and copy the ad ad unit you want to show.
Your code will be something like this
Once you have your adsense code,
Login to your wordpress blog and click on widget under appearance
how to setup adsense ads
Select Text widget and edit it and paste the Adsense code.
With simple two minute of work you can add Google Adsense to your WordPress blog.