When you create a blog on Blogger, the default title is the name of your blog. To change this title, go to your blog’s “Settings” page and under “Title”, enter a new title.
(Please note that if you have comments enabled, your new title will also appear in the Comments Area below your posts.).
If you’d like to use a different name for your blog, you can register a domain name and use that as your blog’s title. (You’ll need to provide information about your blog, such as the name of the blog and where it’s hosted.
) Once you’ve registered the domain name, enter it into Blogger’s “Settings” page under “Title”.