LaTeX is a system for high-quality technical typesetting. Most mathematicians and many other people use LaTeX to typeset papers, exams, books, and more. The LaTeX Project Home Page has additional information.
Installing LaTeX on your personal computer
To get LaTeX for the PC: go to http://www.miktex.org and follow their download and installation instructions.
To get LaTeX for the Mac: go to the MacTeX distribution page and download the installer package MacTeX.mpkg.zip . Once you have opened the zip file and run the installer you can use TeXShop to create, edit, and typeset your documents. TeXShop is included in the MacTeX installer package so you don’t need to download it separately. In addition, the TeXShop documentation page includes links to free LaTeX guides to help you get started.
Using LaTeX onlineYou can create an account on Overleaf (
https://www.overleaf.com/) or ShareLaTeX (
https://www.sharelatex.com/). Each allows you to write in LaTeX and access your files from any computer with an Internet connection.