Site setup

Hi, Upon downloading the theme, these two pages are pre-installed: Privacy Policy and Sample Page. These are irrelevant to me.I There's no proper homepage installed. I like to create the following website pages: Homepage with full size slider of a movie Portfolio page About page Testimonials Contact Do I need to download the demo data for this and change the site from that? If so, where do I find this? If not, what else do you advice? My website is being built in a test environment. Here's the URL: http://spotonlichtontwerp.nl/staging/