Meta tags are the codes of a webpage that are used to provide the data to search engines. These tags are not important for website ranking but it help to get more traffic form search engines like Google, Yahoo, Bing, Ask etc. These code tells the search engines about your site/blog. Meta tags are help to index your pages more quickly and accurately. That means the meta tag of a website/blog communicate with the search engines to provide more infomation about your website/blog. See the following steps for adding meta tags in your blogger blog.
Step 1: SignIn your Blogger account and from the Dashboard of your account go "Design"
Step 2: Then Click "Edit HTML"
Step 3: Now backup your template by clicking "Download Full Template"
Step 4: By clicking F3 search the following code
<b:include data='blog' name='all-head-content'/>
Step 5: Paste the following codes just below the above code
<meta content='Blog Title Here' name='title'/>
<meta content='Description' name='description'/>
<meta content='Keywords Here' name='keywords'/>
<meta content='Blog Languare' name='language'/>
<meta content='15 days' name='revisit-after'/>
<meta content='Blog Author Name' name='author'/>
<meta content='Blog Owner Name' name='owner'/>
<meta content='INDEX,FOLLOW' name='robots'/>
<meta content='(c) 2010' name='copyright'/>
Check the following picture for more help.
Change the red portion of the above codes with your blog information.
Step 6: Save your changes.
That's it. Now go Meta Tag Analyzer for checking your blog meta tags. I hope you will like this.