How To Alter Demo Front Page Elements?

I’m using the full “Main” demo (including Content) for my WordPress site right now, and I’m having a hard time figuring out where the options are to change the elements on the front page.

1. There’s a live, animated image gallery right at the top with captions and buttons, I’d like to change the pictures and captions and where the buttons point to.

2. Below this there are 4 icons/descriptions for “Ultra Responsive Layout”, “Trendsetting Design”, etc. And I’d like to know how I might change these elements.

3. Below this there are various screen-wide panels with metrics and other text information and images.

et cetera.

I’m trying to figure out how I can change the images, text, and other elements to customize this front page. I tried looking through all the options, and even tried digging through the CSS and JS files to see if I could find these elements to change, to no avail.

Any help is appreciated, thank you.