There are so many plugins to add adsense ads in your wordpress blog, I was just trying to add Adsense to my blog and found several plugins available to add Google adsense to wordpress. Finally, I managed to add Google Adsense to this blog without any plugins – this solution takes around 5 mins to setup and it only uses the text widget available in wordpress by default.
Step 1: Login to your blog as administrator
Step 2: Click on Appearance
Step 3: Select Widgets
Step 4: Select the sidebar you want (Default Sidebar 1)
Step 5: Add Text widget
Step 6: Click on Edit widget
Step 7: Enter any caption you want. I have used “Useful Links”
Step 8: Paste your Google Adsense code in the text area.
See example code & screenshot
Step 9: Click done & Save changes.
You should now be able to see Ads from Google showing on your sidebar.