the steps for atmosphere occurring two domains - 1. Main Domain 2. Subdomain for your two blogger blogs i.e. you will have two blogs one in the region of main domain and the tallying on the order of subdomain for example http://earnmoneyguru.blogspot.com and http://www.earnmoneyguru.com.
Below are 3 easy steps as soon as images upon how you can grow a subdomain to your blogs existing domain without any profundity.
Step 1 : Add a A Name Record
Go to your domains registrar website and click on Change DNS/DNS Manager
option. There you would find different CNAME and A records you have
made previously for your main blog. Add another A name record with the
the desired subdomain as your host. For example if you want subdomain http://www.earnoneyguru.com/ for your blog then enter demo in the host name. In the IP/Point to section add this IP - 216.239.32.21 After adding save the record.
Step 2 : Setup the domain in Blogger
Now go to Blog Title → Settings → Basic → Blog Address → Add a Custom
Domain → Switch to Advance Settings and add your full subdomain in our
case it would be www.earnoneyguru.com. Make sure the box saying "Redirect allbloggertricks.com to www.earnoneyguru.com" is unchecked else when someone goes to earnmoneyguru.com (with no www ) they will be redirected to http://www.earnoneyguru.com/
Step 3 : Settings in the main Blog
Even after unchecking the box above, if the domain http://earnmoneyguru.com (without www) redirects you to http://www.earnmoneyguru.com Go to Main Blog Title → Settings → Basic → Blog Address → Edit and check the box which states "Redirect earnmoneyguru.com to www.earnmoneyguru.com"
Thats it, the whole setup is done. Sometimes if takes 1-2 hours for
making the changes by the domain registrar but most of the time change
is withing 5 minutes. Your custom subdomain is ready.