Welcome page - title SEO
Image caption - can be a link - used in media SEO
To create your first page - create a new page, then create a "text media" box, then add that content to the page you made. You may wish to have multiple boxes to each page. You can add boxes to as many pages as you want once they are made.
This information can also be applied as SEO to other pages such as the home page and will override the content of that page.
You can adjust the layout for desktop, tablet or mobile, include social media links, anchors and images, video, or presentation as part of the media panels. Or just make this a media panel with no text.
See maps, forms, galleries etc for other types of panel boxes.