There are many ways to set up additional domains to point to your website, and some of them are pretty simple. You can forward domains to your current website through your domain registrant but this results in a 302 redirect. You can add domains to your current hosting package as an alias or pointer domain but this means the search engines will find your content on each domain that you alias and assume your website does not have unique content. Unfortunately the problem with these methods is that they are not the best