For personal reasons there won't be a TeX Hour tomorrow. The next TeX Hour will be on Thursday 3 February. The topic will be Basics, by which I mean the fundamental concepts and technologies relating to TeX, Typography, Written Language and Communication.
However, the next TeX Hour will be focussed on 2022 basics, not the basics of 1978 (nearly 50 years ago). The basics are the forces that enable and shape for success typesetting as a tool used for communication.
Here's an example of rethinking Typography.
Me, today: Modern Typography for the Blind is the art and technique of audible, tactile and interaction conventions that make written language legible, readable and appealing when rendered for a blind person.
In other words, Typography and User EXperience (UX) are roughly equal partners. And "page" is a word that means both web page and printed page. And MathJax is for many their first experience of TeX.
wishing you Happy TeXing