The LaTeX Home Page 
The latest version of LaTeX and information on the LaTeX3 project, with documentation and experimental code.
http://www.latex-project.org/Text Processing using LaTeX
The LaTeX page at Cambridge. Some introduction and good documentation.
http://www-h.eng.cam.ac.uk/help/tpl/textprocessing/
LaTeX Links
Useful links for downloads and other online resources.
http://www.nhn.ou.edu/~morrison/LaTeX/index.shtml
TeX and LaTeX Books
Descriptions and opinions on various TeX and LaTeX books.
http://www.macrotex.net/texbooks/
Errata for the LaTeX Companion
LaTeX source file containing the latest errata for 'The LaTeX Companion' by Goosens, Mittelbach and Samarin.
http://www.ctan.org/tex-archive/documentation/companion.errata
The LaTeX3 Project
Contains information and articles describing the project to produce a new version of LaTeX.
http://www.latex-project.org/latex3.html
