At the top of screen you will see option to add site. Just type in the URL of
your blog (for example http://coolioblog.blogspot.com/)
Click on Ok button. Next you will get confirmation message. Your site has
been added to your account.
2) Now you need to verify your ownership of blog to view detailed
statistics. Click on verify link. Google offers two methods of
verification. You can either upload an HTML file with a name we specify
(which is not possible with Google Blogger account), or you can add a META
tag to your site's index file. Adding META tag via template code is possible so just select Add a META tag from drop down menu. It will generate code for you. Copy the meta tag code and paste it into your blog template's [HEAD] section in your dashboard. Here is how to do that.
3) Go to your blogger.com and login to your account. Go to your blog
and in the dashboard area click on template or look for the 'HTML' button and click that. You will then see the 'code' for your page or template. Paste the META tag code after [HEAD] tag but BEFORE the closing [/HEAD] tag. Then click the save template changes button.
4) Now go to back to the Google sitemap account page and click the verify button. Google will scan your blog or page for the meta code that you pasted into the [head] section of your blogs code and return a verified response to you. You should note that at times it may take a while for your blog or site to be verified. Generally if it still has not been verified within 24 hours then do the process again and double check the placement of the verification code on your template.
You can add a sitemap to your account to provide Google additional information about about your blog. Google will p;krocess your sitemap and provide information on any errors in the sitemaps tab in the web masters tools area. That's it. Not much effort required and quite possibly a lot to gain from it.