how do I upload content to my website and make it available for download by my clients?

Answer 1

It depends of your website. You can for example, send the content by FTP and do a direct hyperlink to the file. when your clients will click on the link, they will download the file.

Answer 2

use cloud service, maybe

Answer 3

I used this short tutorial from w3schools when I wanted to make a pdf with my resume from my personal website available for download. It is really simple.

https://www.w3schools.com/tags/att_a_download.asp