I'd suggest that, unless you already know HTML CSS and PHP, you use this as a project to learn. Where do you start? Well there are plenty of basic introductions on the web, so search around a bit. You might like W3S, though it's not without flaws. But to get you started, here's my take on it...
Web sites are written in HTML using an ordinary text editor, or a utility that generates the text for you. Writing the HTML yourself is preferable in the long run, but using site generators give quicker, but inferior, results.
The HTML is divided into pages.
The first page (often known as the "home" page) is generally called "index.html".
Links are used to navigate from one page to another. These are often found in a separate DIV called the "nav-bar" (or similar), and in the footer.
EVERY HTML page has a variant of the following basic structure:
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="description" content="--page description goes here--">
<meta name="keywords" content="--page keywords go here--">
<title>--page title goes here--</title>
<h1>--page heading goes here--</h1>
--navigation links go here--
<p>--first paragraph goes here--</p>
<p>--add paragraphs as required--</p>
<!-- end of container --></div>
Note: The DIV "container" is not necessary in all cases, but is often used.