2nd domain

I have just purchased a 2nd domain - but the domain name is tied to the extension .homestead.com (which is not the domain name I selected) - example: janedoe,homestead.com. How do I to the following:

1. get rid of the extension so it is just www.janedoe.com

2. how do I create a new website for my 2nd domain name - because my new website is tied to my first website and when I look under manage domains - my 2nd domain list the name of my first.

Thank you