Mega tags directs the search engine on how to crawl your website and provides the contents the search engine like Googlebot is going to see and present to the searcher.
Adding the relevant Meta tags to your blog is a definite must if you want to see an increase in your blog traffics, it helps to increase your blog search results in all the search engines be it a Google or Bing. Adding the meta tag
is to your benefit.
The relevant meta tags you need for your blog is
Your Blog Description
Your Blog Keywords and
Your Blog Author (main)
You can go ahead as also assign the meta tags for your email address, country, and language, however the most relevant ones are the first three above and below is how you can easily add them to your blog.
Go to your Blogger dashboard and click "Template"
When it Opens click on "Edit HTML" to get access to your blog html script.
Then click anywhere inside the HTML script and press "CNTRL F" on your computer
In the tiny box that will appear Copy and Paste the following code inside it to search for it in your HTML
<b:include data='blog' name='all-head-content'/>
Once you found it, then copy the code below and paste under it directly
<b:if cond='data:blog.url == data:blog.homepageUrl'>
<meta content='DESCRIPTION HERE' name='description'/>
<meta content='KEYWORDS HERE' name='keywords'/>
<meta content='YOUR NAME HERE' name='author'/>
Change "DESCRIPTION HERE' with your own blog description.
Change "KEYWORDS HERE" with your own blog keywords, there is a limit of keywords you can add which 256, do not exceed this limit or risk being penalise by Google (rank low)
Change "YOUR NAME HERE" with your name or the name of the author of the blog, that's it, you are done.
Click Save to save your work, congratulations.
If you still want to add meta tags for your email address, country and language, then copy the following codes below and add after <meta content='YOUR NAME HERE' name='author'/>
<meta content='AUTHOR EMAIL ADDRESS' name='Email'/>
<meta content='COUNTRY' name='country'/><meta content='LANGUAGE' name='language'/>
All you have to do now is save your template, That's it.