TeX Resources

Here are a bunch of useful links for LaTeX tips/questions/issues/etc:

CTAN: Sources, documentation for packages, macros

TeX Live Documentation: More documentation for packages.

LaTeX Wikibook: Great newbie-friendly intro to a bunch of TeX topics.

DeTexify: Looking for a particular symbol/operator/etc? Draw it and this will show you the TeX code to produce it.

LaTeX font guide: Guide to fonts in LaTeX.

Cambridge LaTeX Help: A good intro to TeX.

Beamer Theme Matrix: Displays various combinations of Beamer themes.

TeXample: Many examples of vector graphics possible in TeX.

TeXblog: Good TeX-related blog.

LaTeX project site: Updates on the LaTeX project.