Highend Theme

Hi, I’ve just purchased the Highend theme which I need for Affiliate Marketing which
should incorporate Heading, title Description, List or index of contents, a landing page,
payment facilities and email facilities to capture clicks and added pages for blogs etc.
Any pointers as to how to chose those prerequisites from the amazing number of choices
Available? Because I’m kind of lost?
Also, I’ve got a domain, how do I link that to my new website?