I have been doing research on this, however, it just isn't clear to me the direction to take here.

I setup odoo (including an ecommerce site) on a linode server.  I now want to setup a second website (which I have done within Odoo).  Thanks to some help I got here I have the two websites working quite well together (although one is not yet live), the 2 sites share a few pages and things are good.  However, my next step is to put my second site under a different domain name (i will purchase a second name).  Some linode people were pointing me in the direction of virtual hosts or something (I assume defined on linode), however, they weren't familiar with Odoo.  So my general question is - which path do I go down, trying to setup both sites via virtual hosts (or something) on the linode side or can all the required setup be done via Odoo.  I watched a video where the person went into the Odoo database setup and created both of his sitenames there - not sure if this is the direction to take or not.  As it turned out I could not figure out how to get into the Odoo database setup anyways.  To summarize, I am hoping to have two distinct website names on my Odoo that can share some pages but that obviously have two different URL's which users can call up on their browser.