Facebook, twitter and google + are few of the best social networking sites, millions of people use them world wide, If any of your users could like and share your post he likes via any of social network sites. Let's say if any one shared or liked your post lots of people on facebook can see it and traffic will be increased. So facbook button is very important now we'll make your each and every post will have facebook button on top of each post right after post title.

Log in to blogger dashboard and edit template

Note: backup the template before you proceed with editing template code.

Once you backed up the template now, search for below like
<data:post.body/></b:if>
You'll find it more than 2 times, so simple copy paste below code right before above line.
<b:if cond='data:blog.pageType != &quot;static_page&quot;'> <iframe allowTransparency='true' expr:src='&quot;http://www.facebook.com/plugins/like.php?href=&quot; + data:post.url + &quot;&amp;send=true&amp;layout=button_count&amp;show_faces=false&amp;width=450&amp;action=like&amp;font=arial&amp;colorscheme=light&amp;height=45&quot;' frameborder='0' scrolling='no' style='border:none; overflow:hidden; width:600px; height:45px;'/> </b:if>
Make sure you paste it right before <data:post.body/></b:if> as shown below.

<b:if cond='data:blog.pageType != &quot;static_page&quot;'> <iframe allowTransparency='true' expr:src='&quot;http://www.facebook.com/plugins/like.php?href=&quot; + data:post.url + &quot;&amp;send=true&amp;layout=button_count&amp;show_faces=false&amp;width=450&amp;action=like&amp;font=arial&amp;colorscheme=light&amp;height=45&quot;' frameborder='0' scrolling='no' style='border:none; overflow:hidden; width:600px; height:45px;'/> </b:if>

<data:post.body/></b:if>
Now save the changes and open your website to check, hit any post and check. If every thing was done properly facebook buttons show up like below.