should i both Copyright the sites content and Trademark the domain name? I am not clear on this at all.
Since both are free, yes. Identify your domain name as domain.com™ on your site and © 2007 at the bottom of your site pages. (both are protected without those, but using those marks makes it clear to others that you are claiming a trademark in the domain name and hold the copyright to your site content.) The expense comes when you seek to enforce your copyright or trademark in court.