Landing pages

Hi, I would like to add a ‘cover’ landing page to my website.
I would like to create a landing page like this > https://www.arxpub.com/HomeschoolProm/index.html that has links that lead to https://lehighvalleywomansjournal.com/south-jersey-womans-journal/ and https://lehighvalleywomansjournal.com/ with minimal text.

The problem: I have no idea how to proceed with these plans.

Could someone please tell me if this is possible and how to achieve this.

Oh and is there a way to make this page appear on every page of the website, no matter what url you come to and there be a third button that says “click here to proceed to article”