Errata for the LaTeX Companion: LaTeX source file containing the latest errata for 'The LaTeX Companion' by Goosens, Mittelbach and Samarin.
LaTeX Links: Useful links for downloads and other online resources.
TeX and LaTeX Books: Descriptions and opinions on various TeX and LaTeX books.
Text Processing using LaTeX: The LaTeX page at Cambridge. Some introduction and good documentation.
The LaTeX Home Page: The latest version of LaTeX and information on the LaTeX3 project, with documentation and experimental code.
The LaTeX3 Project: Contains information and articles describing the project to produce a new version of LaTeX.