Having experience with digitizing a university textbook in physics by hand, this is a very nice LaTeX guide for everyone interested. One thing worth noting from 2025 perspective that the "default" local setup is most likely going to be VSCode with LaTeX Workshop[1] and LTeX+[2] extensions, and that you should use TeX Live on every platform supported by it (since MiKTeX and friends can lag). Also, use LuaTeX, as it's the officially recommended[3] engine since November 2024.