Add The Facebook Like and Send Button To Blogger Post

1. Go To Blogger > Design > Backup your template by clicking on Backup and restore 
2. Click on Edit HTML
3. Search for <data:post.body/>. Choose the last instance of <data:post.body/> if multiple occurrence of it appears.
4. Paste the below highlighted code above <data:post.body/> if you wish to appear the widget above the article. Or if you wish that the plugin may appear at the end of your posts then paste the following code just below <data:post.body/>
   <div id="fb-root"></div><script src="http://connect.facebook.net/en_US/all.js#xfbml=1"></script><fb:like href="" send="true" layout="button_count" width="450" show_faces="false" font=""></fb:like>
5. Hit save and you are done!