Adding meta tags is very important in order to get more traffic from search engines like Google, Yahoo and others. Adding meta search tags are not the only element for SEO (Search Engine Optimization), yet they still play an important role.
You can find below a detailed description on how to add Meta Tags to your blogger (blogspot) blogs.
Step-1
Log into your Blogger account with your username and password. Once you are in your blog's dashboard click the 'layout' button (see the screenshot below)
Step-2
Look under the Layout tab and click on the 'Edit HTML' tab.
Step-3
Make a backup of your template if you haven't already. This is always a wise idea in order to let you easily repair any accidental mistakes that might happen while you edit the HTML code of your blog.
Step-4
Here is the code you have to add in your template.
<meta content='DESCRIPTION HERE' name='description'/>
<meta content='KEYWORDS HERE' name='keywords'/>
<meta content='AUTHOR NAME HERE' name='author'/>
Find the below code (in the top section of your template) and add the above code just after this code.
<b:include data='blog' name='all-head-content'/>
Step-6
See the below screen shot, after you add the Meta Tag code.
Note:
Fill out and replace what is in the red as shown below.
DESCRIPTION HERE: write your blog description
KEYWORDS HERE: write the relevant keywords to your blog
AUTHOR NAME HERE: write the author's name (your name)
It is important to note that not to fill the description section with keywords. “Do not do this”. This may result in Google and other search engines banning your site.
Now click preview and view your blog. If everything looks correct and there are no errors, save your changes.