AskOxford.com, material on words, better writing, etc.
Ethnologue Languages of the World, catalog of 6700
languages gives alternate names, number of speakers, location, dialects,
linguistic affiliation, and other information.
Foreign Language Learning Center, this
site does not supply language lessons or instruction modules but does provide
information on library resources (from Choice, Supplement 37).
Language Varities, a page about varities of language
other than standard varities; includes Ebonics