LaTeX is a free open source typesetting program that is particularly good at presenting mathematical symbols, formulas, graphs, as well as non-Roman alphabets better than traditional word processing programs (e.g. Microsoft Word).
- The LaTeX project - Official home of the LaTeX document preparation system
- Free & Interactive Online Introduction to LaTeX - if you are new to LaTeX, try Part 1
- Learn LaTeX in 30 minutes - by ShareLaTeX/Overleaf
- The Comprehensive LaTex Symbol List by Scott Pakin (version 5 May 2021; 422 page pdf file)
- How To Write a Paper and Format it Using LATEX - Harvard University
- A Guide to the Many Flavours of TeX
- A quick guide to LaTeX by Dave Richeson (1 page Tip Sheet summary; posted on Overleaf site)
- LaTeX WikiBook - This is a guide to the LaTeX typesetting system. It is intended as a useful resource for everybody, from new users who wish to learn, to old hands who need a quick reference.
- Bold, Italics, Underlining - by Overleaf
- Line Breaks & Blank Spaces - by Overleaf
- Lengths in LaTeX - by Overleaf
- Inserting Images - by Overleaf, covers the graphicx package
- Tables - by Overleaf
- How to position images and tables - by Overleaf
- Bibliography Management - by Overleaf, covers the biblatex package
- Hyperlinks - by Overleaf, covers the hyperref package
- International Language Support - Guide by Overleaf
- Language Reference Guide - by Overleaf
- Babel User Guide - for internationalization in LaTeX, etc. [links to the pdf guide]
- Mathematical Expressions - by Overleaf; covers both Inline & Display Math Modes
- AMS LaTeX - main page with links to the user's guide, etc.
- snip (mathpix) - extract LaTeX from PDFs or handwritten notes.
- Interview with Leslie Lamport - creator of LaTeX & 2013 Turing Award Winner (video taped 2014)
- Donald Knuth - creator of TeX & 1974 Turing Award Winner (video taped 2007)