Center for Advanced Research on Language Acquisition-University of Minnesota.

Supports a number of coordinated programs of research, training, development, and dissemination of information related to second language teaching, learning and assessment.
http://www.carla.umn.edu/

ESLResearcher.org

A site for those doing research into the acquisition of English as a second language. Includes conference listings and calls for papers, job postings, discussion lists, message board for researchers, and links to ESL graduate programs.
http://eslresearcher.org/

Language Acquisition

Draft version of a paper on this subject by Steven Pinker.
http://www.ecs.soton.ac.uk/~harnad/Papers/Py104/pinker.langacq.html

Language Acquisition- Mama Teached Me Talk

How we learn language.
http://www.facstaff.bucknell.edu/rbeard/acquisition.html

Second Language Writing Research Network Forum

Website designed to provide resources for teachers and researchers of second language writing and to facilitate the exchange of information. Links to professional resources for second language writing teachers and researchers.
http://icdweb.cc.purdue.edu/~silvat/forum/

Second Language Acquisition Bibliography

A list of scholarly writings arranged by subtopic, maintained by Vivian Cook.
http://homepage.ntlworld.com/vivian.c/SLA/SLABIB/

Studies in Second Language Acquisition

Journal published by Cambridge University Press. Includes online indices and information for submitters and subscribers.
http://www.indiana.edu/~ssla/

The International Commission on Second Language Acquisition (ICOSLA)

Scientific organization set up to provide a worldwide forum for the development of SLA research. Provides archive and links to online resources.
http://www.hw.ac.uk/langWWW/icsla/icsla.htm

EuroSLA: European Second Language Association

Conferences, publication and subscription information, links.
http://www.swan.ac.uk/cals/eurosla/

Language Acquisition - Wikipedia

A useful brief overview of some of the current theories of language acquisition, with references to Chomsky, Lenneberg and the evidence from feral children such as Genie.
http://en.wikipedia.org/wiki/Language_acquisition

A Concept of 'Critical Period' for Language Acquistion

A paper discussing the implications of a 'critical period' of language acquisition for adult language learning.
http://www.tsuyama-ct.ac.jp/kats/papers/kn7/kn7.htm

A Discussion of Language Acquistion Theories

Descriptions of eight of the different language acquisition theories, and their relevance to both first and second language acquistion.
http://maxpages.com/thena/ladiscussion

Feral Children - Critical Period Hypothesis

Several useful papers, including Locke's suggesting the term 'sensitive period' instead of 'critical period', and Jones' looking at Genie's language acquisition after the critical period.
http://www.feralchildren.com/en/critical.php

Hayo Reinders

Applied linguist offering various resources related to the noticing hypothesis, learner autonomy and Computer Assisted Language Learning.
http://www.hayo.nl

Association for Language Learning

Organization representing teachers of all languages in the United Kingdom. Includes news, publications, membership information.
http://www.all-languages.org.uk/