Guide to LaTeX & Typesetting
LaTeX is a highquality typesetting system designed to produce beautiful technical and scientific documents, especially involving mathematical equations.
It is widely used in typesetting science and mathematics journals.
Tutorials

Short Article LaTeX Template (175K Download)
Our compact LaTeX template is an excellent starting point for REU, Modern Physics, or Jr. I.S. papers. It employs REVTeX,
the LaTeX designed by the American Physical Society for its journals.

Short Article LaTeX + BibTeX Template (168K Download)
This compact LaTeX template uses uses BibTeX to accommodate more citations, which are traditionally updated by the compile sequence "LaTeX, BibTeX, LaTeX, LaTeX".

Senior Thesis LaTeX Template (20K Download)
Our more advanced Sr. I.S. template is designed to be printed doublesided like a book.

Not So Short Guide
This is a good introduction to LaTeX, not too short yet not too long.

Wikibooks LaTeX
This is a, more or less, complete repository for questions about LaTeX typesetting.
LaTeX editor

TeXShop
TeXShop is a modern TeX editor and previewer, which is widely used with macOS.

TeXstudio
TeXstudio is a newer TeX editor available for macOS, Windows, and Linux.

Overleaf
Overleaf is a commercial online LaTeX editor that facilitates collaboration.

LaTeXiT
LaTeXiT is a small macOS app that allows one to quickly typeset LaTeX equations, and drag & drop them to any supporting application, such as Keynote.
LaTeX compiler

MacTeX
MacTeX is an easy to install package necessary to compile your LaTeX code on macOS.

MiKTeX
MiKTeX is an easy to install package necessary to compile your LaTeX code on Windows or macOS.
Other Software

LyX
Free WYSIWYM document processor, which uses LaTeX in the background.

MathType
Commercial WYSIWYG alternative to LaTeX. Intuitive and fun to use with Apple and Microsoft products.

Word
Our Word template is a good nonLaTeX alternative, especially for short articles. The Word Equation Editor is LaTeX friendly.