By default, the URL of a Blogger blog look like: http://yourblogname.blogspot.com. Technically, Blogger blog is a sub-domain under the main domain "blogspot.com". If you are using Blogger to host a site professionally or representing a brand, it will be better to get a domain name so that it can be accessed using an address like "www.yoursite.com". You can then redirect Blogger to the custom domain name so that it can be accessed using the domain name.
The first thing that needs to be done for redirecting the Blogger blog to a custom domain is to buy a domain, of course. So get one on GoDaddy or any preferred domain registrant. You many need to configure DNS, CNAME etc. This is not covered in this tutorial. Get help from your registrant's support if required.
Assuming you have the domain bought and working, let's proceed with redirecting Blogger to the custom domain name.
Steps to redirect setup Blogger with a custom domain name:
- Login to Blogger
- Click on settings > basic
- Under "Publishing">"Blog Address", click on "+ Set up a third-party URL for your blog"
- Click on the blog domain text box and enter the new domain name
- Check the redirect "domainname.com" to "www.domainname.com" - if this is not checked the blog will not open when people do not type www in front of the blog address.