In my tutorials that instruct you how to make your blog friendly to search engines in general, and to the Google spider specifically, the meta tag is a key element. The meta tags are very versatile code that should be located immediately following the blog title, in the blog header. You'll be using the Template Editor to view, and to modify, this code. As always, if you intend to make changes to the code, backup the template before and after making changes.
What Blogger won't tell you