The Quickstart package will give you an exact copy of the demo site setup.
Everything is installed and configured in a few simple steps.
1. Download and extract the main zip.
2. The Quickstart zip inside will work exactly as a standard joomla installation, only modified to also install demo data and the extensions used. So you only have to upload and unpack this quickstart zip to your webhosting account, and you are ready to install.
3. Similar to how you would install a standard joomla, you just have to visit your website and you will now see the installation page.
4. Complete the steps in the installation process.
5. When done, you will have a ready to go site. Simple as that.