Bobby Bodenheimer's article, from which this FAQ was developed, used
to be posted (nominally monthly) to newsgroup
comp.text.tex. The (long
obsolete) last posted copy of that article is kept on CTAN for
auld lang syne.
The sources of the present FAQ are available from CTAN.
This FAQ and others are regularly mentioned, on
comp.text.tex and elsewhere, in a “pointer FAQ”
which is also saved at http://tug.org/tex-ptr-faq.
A 2006 innovation from Scott Pakin is the “visual” LaTeX FAQ. This is a document with (mostly rubbish) text formatted so as to highlight things we discuss here, and providing Acrobat hyper-links to the relevant answers in this FAQ on the Web. The visual FAQ is provided in PDF format, on CTAN; it works best using Adobe Acrobat Reader 7 (or later); some features are missing with other readers, or with earlier versions of Acrobat Reader
Another excellent information source, available in English, is the (La)TeX navigator.
Both the Francophone TeX user group Gutenberg and the Czech/Slovak user group CS-TUG have published translations of this FAQ, with extensions appropriate to their languages.
The Open Directory Project (ODP) maintains a list of sources of (La)TeX help, including FAQs. View the TeX area at dmoztools.net
Other non-English FAQs are available (off-CTAN):
de.comp.tex, and archived on CTAN; the FAQ also appears at http://www.dante.de/faq/de-tex-faq/
fr.comp.text.tex, and is archived on CTAN - sadly, that effort seems to have fallen by the wayside.