Facebook like button helps reader to like your blog post. Fb developer group allow to create a button and you can add it on your blogger blog. You can able to put it where ever you want in your blog. But the best place to add it in below post titles. When a reader like to your post then, they want to share their feeling by share post on their social media. It helps a blog to get better social media responses. 
When, a visitor like your post then, it will also show in her / his Facebook timeline. So this is a great way to get more traffics from FB. 
In techshoutme here I will share lot of tricks about Facebook. Like as:
In today's post, I will show you how to add a like button in to your blogspot blog. So let's start:
Facebook like button for blogger

  • Log in to your blogger account and go to Template >> Edit HTML (For security purposes take a backup your present template)
    template edit html
  • After that, click  anywhere inside the Edit code area. And press Ctrl F and search below code.
<data:post.body/>
Note : You will find this code more than 3 times. Select 2 no code. If not working then, select 3rd no.
  •  Paste the below code just above the <data:post.body/> tag. 
<p><iframe allowTransparency='true' expr:src='&quot;http://www.facebook.com/plugins/like.php?href=&quot; + data:post.url + &quot;&amp;layout=button_count&amp;show_faces=false&amp;width=100&amp; action=like&amp;font=arial&amp;colorscheme=light&quot;' frameborder='0' scrolling='no' style='border:none; overflow:hidden; width:100px; height:20px;'/></p>
  • Click on save template. You're successfully done to add it. Visit your blog and check it. 
Getting social media responses is a great way to increase your blog popularity. Hopefully, you will add Facebook like button on your blogger blog. If you get helpful in this post then, share it on your social media.