Get the code here wp.me/pKqZf-xA
How to add google buzz button inside the post left or right?
How to add buzz button in home page or teaser box both left side and right side?
It explains custom.css and custom_functions.php code in detail.
This buzz button will not shown in pages like about us and etc..
This video will give an idea about how to add any share button inside post and in homepage.