The IATEFL Young Learners SIG's website contains information about the SIG, events and conferences, publications, bibliographies and links to on-line resources: http://www.countryschool.com/ylsig2/index.php

Members of the SIG can join the IATEFL Young Learners SIG Discussion list at: younglearners-subscribe@yahoogroups.com

The on-line resources part of the Young Learners SIG website has a bibliography section and an excellent section with lots of weblinks:
http://www.countryschool.com/ylsig2/weblinks.php

The Try section of the Teaching English website has a special section for teachers of young learners: http://www.teachingenglish.org.uk/try/resources/teaching-children
It offers a range of tips and resources which are based around online materials from the British Council's LearnEnglish Kids website. Most of the materials can be used either online or printed up to be used in the classroom: http://www.britishcouncil.org/kids.htm

The Try section of the Teaching English website also has links to a number of other on-line resources related to teaching young learners. There are links to websites for teachers of young learners of all age groups at:
http://www.teachingenglish.org.uk/try/links/Resources:young-learners

There is a section with links for those who teach under eights:
http://www.teachingenglish.org.uk/try/links/young-learners-under-8

The next section has links to those who teach eight to thirteen year olds:
http://www.teachingenglish.org.uk/try/links/young-learners-8:13

There is also a section for those who teach over thirteens:
http://www.teachingenglish.org.uk/try/links/young-learners-over-13

The UK examinations boards and major publishers also have websites with specific sections for teachers of young learners:

If you are preparing students for Cambridge ESOL's Young Learners English Test (YLE), you'll find useful guidance, resources and classroom activities on this section of the Cambridge ESOL Teaching Resources website:
http://www.cambridgeesol.org/teach/yle2007/

CUP's website offers support for young learner teachers including downloadable activities, articles and tips: www.cambridge.org/elt/resources/young/

Macmillan's young learner website has information about materials to supplement their coursebooks: http://www.macmillanenglish.com/younglearners/home.html

Their onestopenglish website has a separate section dedicated to young learners, with lesson plans, games and worksheets suitable for teachers of preschool learners to teenagers:
http://www.onestopenglish.com/section.asp?sectionType=listsummary&catid=...

The on-line Oxford Teacher's Club organised by Oxford University Press has a section for young learner teachers with articles and free downloadable materials at:
http://www.oup.com/elt/teachersclub/young_learners/?cc=gb

There is also a section for teachers of teenage learners at:
http://www.oup.com/elt/teachersclub/teenage/?cc=gb

Pearson Longman's website gives teachers access to teaching tips, activities and companion websites: www.pearsonlongman.com/young_learners/

International House Barcelona's website has links to a number of young learner websites:
http://www.ihes.com/bcn/tt/yl-sites.html

The website of the Kindersite Project for all preschool and kindergarten age children and English learners has links to many games, songs and stories for young children: http://www.kindersite.org/

Shelley Vernon's website contains articles on teaching young learners and some free stories and games: http://www.teachingenglishgames.com/

The Sites for Teachers website has links to hundreds of other educational websites: http://www.sitesforteachers.com/index.html