INTUTE Arts and Humanities -- offers a quick and convenient way to discover notable online resources for education and research in Creative Arts and Humanities.
BUBL Information Service-- Provides links to internet resources from different subject areas. The site is maintained by Strathclyde University.
Literary connections: Language resources-- -- a megasite with links to topics on corpus linguistics, dictionaries, grammar and more.
English Language in the Yahoo Directory -- A directory to English Language references and various resources.

[References]

BBC’s learning English site -- provides an excellent start for learners of the English language.
British Council – learn English -- Various links to English Language resources that is catered towards learners and teachers of English.
Linguistic Resources on the Internet -- a compilation of linguistics resources by SIL International (formerly known as the Summer Institute of Linguistics)
Linguistics Subject Guide by the University of Delaware Library
Stanford University's guide to the best linguistics resources on the web -- compiled by Associate Professor Christopher Manning from the Natural Language Processing Group, Stanford University
Resources for general linguistics by the University of Texas at Austin
Oxford University Press Links Library for Linguistics -- Maintained by Oxford University Press, this site contains various links to linguistics resources.
Linguist list -- provides information on language and language analysis as well as online bibliographies covering Internet and print resources in linguistics.

[Dictionaries]

The Concise Oxford Dictionary of Linguistics -- For e-book version subscribed by NTU Library, check the Library Catalogue.
International Encyclopedia of Linguistics by Oxford University Press -- Access via Oxford Reference Online.
Oxford English Dictionary Online (subscribed version) -- Published by Oxford University Press.
Dictionary.com
Merriam-Webster Online
OneLook Dictionary Search

[Associations & Societies]

British Council -- Links to educational resources on English language learning.
Education UK -- produced by the British Council to help international students interested in studying for a UK course or qualification.
Promotion of Standard English (NUS) -- NUS committee that aims to promote the use of Standard English. Contains useful links to online English Language guides.

[Discussion lists]

National Institute for Literacy – English as a Second Language Discussion List