Hello,
1. For installing site like on demo, we provide "quickstart packages"
how to install "quickstart packages" read here:
ordasoft.com/News/Joomla-Tutorials/how-t...ckstart-package.html
2. for the first time please use admin/admin (after installation you will be able change in admin area)
3. All images in template it's only for showcase, after installing template please use your own images with optimum size for you
Best Regards,
OrdaSoft team