There are no more requisites, check the following points
1. Basic computer knowledge. (Notepad)
2. Basic knowledge of internet different usage.(Browser)
3. Domain and hosting knowledge (not compulsory but required after you learn HTML)
To learn the HTML you can explore
- https://www.htmlrun.com/p/blog-page.html
- https://www.youtube.com/channel/UCcVTNUZUvREgMVSZ9tcdPZA