LaTeX stuff
Some LaTeX tips-and-tricks-and-links. Classes and packages from publishers
Most of the big publishing companies accept manuscripts written in LaTeX. For manuscript preparation they provide their own LaTeX document classes and/or packages. This holds for books, proceedings volumes as well as for single papers. These might be very usefull for preparing your own papers or theses.
Here is a non-exhastive list of links to web pages on which you can find those resources.