Here are some useful resources for learning and using LaTeX & TeX.
- Overleaf's tutorials: A beginner-friendly tutorial that covers the basics of LaTeX.
- Overleaf's documentation: A comprehensive documentation that covers many topics related to LaTeX.
- Learn LaTeX: A tutorial that offers an interactive approach to learning LaTeX.
- [amsmath & mathtools](https://ctan.org/pkg/amsmath & https://ctan.org/pkg/mathtools): Two essential packages for typesetting math equations.
- [amsthm & amssymb](https://ctan.org/pkg/amsthm & https://ctan.org/pkg/amssymb): Packages that provide additional symbols and theorem environments.
- PGF/TikZ: A powerful package for creating high-quality graphics and diagrams.
- Effortless Plotting with PGFPlots: A comprehensive guide to creating plots and charts with PGFPlots.
- Detexify: An interactive tool that allows you to draw a symbol and find its LaTeX command.
- TeXit's cheatsheet: A helpful cheatsheet that provides LaTeX commands for common symbols.
- Math symbols: A list of LaTeX commands for common math symbols.
- Comprehensive list: A comprehensive list of LaTeX commands for symbols.
- Stack Exchange: A community-driven question-and-answer site for LaTeX.
- Notes On Programming in TeX: A detailed guide to programming in TeX.
- The TeXbook: A classic book that provides a comprehensive introduction to TeX.
- TeX by Topic: A guide that covers many advanced topics related to TeX.
- A Gentle Introduction to TeX: A beginner-friendly introduction to TeX.
- TeX in a nutshell: A concise reference guide to TeX.
- source2e: The source code of LaTeX2e's document class and packages.
Feel free to check out my stuff on GitHub: https://github.com/Kensukeken/TeX.