Back up wordpress site and then link two new domains to the backed up website...

I am in the process of moving countries and need assistance with the below. I own a company in my home town and would like to use my existing website template (look and feel), duplicate this, and create two new templates for my two businesses I am starting up in my new country. I know how to change logo's and update content but I'm not sure how to copy my current site and then link it to two new domains. I would also like to have information below my business URL when people search for us on Google, almost like quick links that people can click on that will take you straight to my contact page. I bought a wordpress template called loom and there are a few different layouts, I want the one site to use the existing layout and then possibly change the second websites layout. I will only need to be doing all of this in a months time but would like to get a quote.