In this setting, you have the option of changing your Blogger .blogspot.com to your custom domain name which will bear www.yourwebsitename.com
So in the “Publishing” sub link, you won’t need to act if you love your .blogspot.com or you are a beginner who does not have the money to buy a new domain name and be renewing it yearly. Your blog would remain hosted by Blogger under its subdomain.
Now if you have already made some money and feel like converting your .blogspot.com to www.sitename.com, you have to pay attention here. The first thing you do is to go to www.godaddy.com and buy your custom domain name (the name you wish to call your blog). You need to be renewing your domain name yearly like any other domain in the World Wide Web. But Blogger will host it for you freely for life.
Now after paying for your domain, go to godaddy.com and set up the DNS.
1. Login to your godaddy.com account
2. Go to “My Account”
3. Click on the tab “Domains/ Domain Manager” by your left hand side.
4. Go to ‘Tools’ on the top bar and Click on “DNS Manager’
5. Go to ‘Edit Zone’ and set up your CNAME
6. In the box titled “CNAMES” (Aliases), click on “Add New CNAME Record”. In place of the name add “www” (without the quotation marks).
7. For the “Host Name”, type in ghs.google.com
8. Choose a TTL (the time your changes should take to be made); you could choose 15 minutes, 1 hour, etc
9. Click OK and Click OK again.
Now that you have created your CNAME Record, look for “A-Records” and type your domain name as bizsuccessguide.com (don’t add www) to enable people locate your blog even though they fail to type in www on their browsers.
After that, you will create an A-Record for each of these I.P. addresses.
You do this by filling them individually. First you create one for 18.104.22.168 and then click on A-record again and fill in 22.214.171.124; repeat same procedure for 126.96.36.199 and 188.8.131.52 and save your settings. It takes less than 20 minutes for your settings to be activated.
Remember to delete this IP address: 184.108.40.206 if your domain was transferred from another domain registrar and kept in their parked domain, otherwise your domain would keep pointing to godaddy’s parked domain and that would make it to be off and on.
When all is done, click ‘save zone file’ and you will get a message that says: Your changes have been submitted.
These changes usually take 1 hour. However, it may take up to 48 hours for these changes to take effect. These time frames are estimates and not guaranteed.
Click OK and you are done.
After 20 minutes, login to your blogger blog account and go to your “Publishing” sub link. Click “Switch to Custom domain” and fill in your new domain name e.g. www.bizsuccessguide.com (replace bizsuccessguide with your domain name) and save your changes. After that, Blogger would update your DNS servers within the next 48 hours.
If you want to change your DNS record later, simply go back to the Zone file Editor and do your changes
And that is all about linking your Blogger Blog to your Custom Domain