This document provides an introduction to TeX and LaTeX. It discusses that TeX is a computer program for typesetting documents created by Donald Knuth, and LaTeX is a dialect of TeX written by Leslie Lamport that is particularly suited for long documents like articles and books. It then provides steps for installing LaTeX and configuring a LaTeX editor like TeX Maker on Windows, and provides a simple example of a basic LaTeX document with title, author, and date commands.