First things first, it's pronounced "lay-tech" or "lah-tech", you can verify in the official website. And, it's the Greek alphabet Chi, not the English alphabet X. Ironically, I cannot actually use LaTeX here since Google Sites isn't there yet (although there is a work around). TeX, the predecessor of LaTeX is simply a programming language for typesetting documents. LaTeX can be thought of as TeX with macros. Donald Knuth created TeX over some 10 years with the objective of fixing typography issues, especially with technical text. The point of LaTeX is to let users focus on the content while spending minimum time formatting every square inch of their document. Although, many people end up spending much more time doing basic formatting in LaTeX than with other tools since they fail to understand how LaTeX works. There is enough content for getting started with LaTeX but the purpose of this blog is to highlight the use of LaTeX and to shed light on a decent setup. So I'll keep this very short so as to not intimidate those new to it.
To make any document or presentation. You can also embed LaTeX in a bunch of places, one of which is Obsidian since LaTeX really steps up note-taking in it. For presentations, one can (and better) use LaTeX Beamer! You can even make posters with LaTeX! A solid setup is installing Tex Live and using the LaTex Workshop extension in VS Code.
Compile locally! Compiling online using cringe online compilers is, well, cringe. Making code snippets in your preferred code editor helps a lot. Look for some quick start tutorials maybe?
https://en.wikibooks.org/wiki/LaTeX/Presentations
Oh and here's my theme :D