This topic contains packages with documentation in Spanish.
A short document about antique spanish units.
CervanTeX (Spanish TeX Group) FAQ.
Guia casi completa de BibTeX.
Spanish translation of "Obsolete packages and commands".
Unofficial reference manual covering LaTeX2ε.
A LaTeX cheat sheet, in Spanish.
Short introduction to LaTeX, Spanish translation.
Description of fonts for TeX, in Spanish.