Here is an HTML File's skeleton (or outline)
<html>
<head> </head>
<body> </body>
</html>
The <html> and </html> tags represent where the file begins and ends. The <head> and </head> tags represent qualities, such as the tags, the header, and the length and width. The <body> and </body> tags represent what the page will show, such as pictures and videos.
I will get into more detail on each of these sections and how to use them to your advantage later.
Why bother with writing a tutorial? Why not just point people to W3-schools? You can learn almost any web related language there. @BlackDown- Do you know HTML already? If not, you should learn HTML before PHP. It's a lot easier that way.