LaTeX resources

• CTAN (the Comprehensive TeX Archive Network)
• A pretty good LaTeX guide in source (.tex) and PDF.
• The AMS's "Short Math Guide for LaTeX" (PDF).
• Drawing diagrams in LaTeX (PDF).
• How to produce that essential mathematical symbol, the bicycle, in LaTeX: CTAN's comprehensive LaTeX symbol list in source and PDF.
• The world's fastest editor and a plugin to speed up your LaTeXing even more.