There are so many excellent on line resources  for learners of English (and they are free!) that it is extremely difficult to decide which are best and which to choose.   I have tried to select some of those I  found most appropriate.  But consider the following are only a tiny portion of the wealth  you will find on the Internet.  Search well,  and if in doubt how to search and what to select consult Ester Grassian´s Thinking Critically about World Wide Web Resources you can get at : http://www.library.ucla.edu/libraries/college/instruct/web/critical.htm and Robert Harris´s Evaluating Internet Research Sources at : http://www.vanguard.edu/rharris/evalu8it.htm.   The rest is practice and challenge.

Below you will find some  good starting points for exploring language and language related resources,  English grammar,  tests,    useful FAQ with details,  quizzes and grammar questions and answers,    hints,  explanations,   writing skills,   punctuation,  online newspapers and dictionaries and glossaries , a virtual environment, where to practice English while sharing ideas and experiences with other learners  of English: you can even expect feedback from generous tutors.    Try to choose well the site which suits your need best.  Always search for best quality and good style  concise, clear and simple.  Establish priorities and ask yourself 

a) what do I know already? 

b) What am I looking for in this source, what do I think I need?

c) What is useful or different in this source, given my existing knowledge and my interests? 

Enjoy your hunt and your learning!   Learn,  refresh, discover,  share and let me know! 

RESOURCES: 

Writing Labs

http://owl.english.purdue.edu/  (Purdue University on line writing lab with links to Internet Search tools, Resources for Writers and Teachers, their own Online Writing Lab and other OWLs around the world..

http://owl.english.purdue.edu/owls/writing-labs.html - Writing Labs and Writing Centers on the Web.

http://owl.english.purdue.edu/writers/by-topic.html#spelling - OWL Handouts indexed by topic - Writing, Research Papers,  Punctuation, Capitals, Spellling, Sentence Construction, Parts of Speech, ESL, Exercises (and answer keys) Professional Writing.

http://owl.english.purdue.edu/esl/ESL-student.html - ESL Resources for Students, Purdue OWL,  Online Courses, Grammar, Idioms, Vocabulary and Games, Academic Conventions, Quizzes, Conversations, email Lists and other interesting sties. 

http://www.ucl.ac.uk/internet-grammar/An Online course in English grammar with glossary of terms, exercises and some free very good sample downloading. 

http://www.ucl.ac.uk/english-usage/ - The survey of English Usage based in the Department of English Language and Literature at University College London, with an Internet Grammar of English and exercises.

http://www.wordsmith.org/awad/index.html - A word a day to enrich your vocabulary and learn new words. You can subscribe to the list and receive it daily in your mailbox.

http://www.logophilia.com/WordSpy/today.html -  similar to above, spy words and non traditional searches. 

http://www.edunet.com/english/grammar/index.cfm - On Line English Grammar

http://www.cortland.edu/flteach/flteach-res.html - A number of Collections put together by FL colleagues "so that  we don´t have to reinvent the wheel". An impressive collection of www FL Resources. Links to Media, Dictionaries,  Collections made by teachers and links to other languages. 

http://www.sussex.ac.uk/langc/callfaq.html -   The Virtual CALL Library "aims to be a central point of access to the diverse collection of Computer Assisted Language Learning (CALL) software scattered across the Internet and available for downloading".  Language education organizations, journals and mailing lists. Good value.

http://departments.colgate.edu/diw/NWCAOWLS.html - National Writing Centers Association from Colgate University, USA "the most comprehensive list of Writing Centers"  

http://www.baclass.panam.edu/coba/grammar.html

http://web.missouri.edu/~writery/- more on the  world of online writery.

http://garage.nexted.com/usqonline/users/d9930317/usqwebsites.htm - Have a look at Steve´s fascinating links. (Steve Watson is a student of USQ)

Dictionaries:

http://www.brown.edu/Student_Services/Writing_Center/dictiona.htm - Dictionaries on the WWW, English, foreign, Slang and Other Miscellaneous Sites from Brown University

http://www-math.uni-paderborn.de/dictionaries/Dictionaries.html

http://www.yourdictionary.com/   (an incredible array of languages - an absolute challenge!) 

http://www.yourdictionary.com/diction4.html - dictionaries on any field you need to explore!

http://www.britannica.com/

http://dictionaries.travlang.com/

Terminologies and packaging sites: (this list will be completed shortly, any suggestions on packaging sites welcome)

http://www.uwasa.fi/comm/termino/collect/

http://www.uwasa.fi/comm/termino/collect/special/printing.html  - graphic industries

http://www.uwasa.fi/comm/termino/collect/diction/english.html  monolingual

www.pkg.msu.edu  -  The School of Packaging, Michigan State University

www.corrugated.org  - Corrugated, the Inside Story

www.incpen.org  -  Packaging and Environment

Search for newspapers on line editions

http://www.sussex.ac.uk/langc/CALL.html

http://www.aitech.ac.jp/~iteslj/quizzes/project.html

Pronunciation, intonation, phonetics

http://www.phon.ucl.ac.uk/project/siphtra.htm 

http://www.phon.ucl.ac.uk/home/johnm/eptotd/tiphome.htm - John Maidment Homepage. You will find lots of interesting links and practical tips and exercises

http://www.phon.ucl.ac.uk/ - University College London

the famous :  http://eslcafe.com/

http://www.ling.upenn.edu/phono_atlas/NationalMap/NationalMap.html - for those searching American English  

and if you are looking for something really challenging go to:

http://eleaston.com/  an impressive collection of live listening  English  teaching and learning and many other links you´ll have to organize really systematically if you plan to search it all. 

Want to have some fun?  Try tonguetwisters, puzzles and quizzes:

http://www.uebersetzung.at/twister/en.htm - English Tongue Twisters

http://www.aitech.ac.jp/~iteslj/quizzes/ - And  suggestions to work on quizzes together with learners: and send the quiz prepared  for submission to include in their site:

http://www.aitech.ac.jp/~iteslj/quizzes/project.html

Kathy Schrock and  New York Times Learning Net

http://school.discovery.com/schrockguide/

http://www.nytimes.com/learning/general/guide.html

http://www.nytimes.com/learning/teachers/lessons/index.html

http://www.nytimes.com/learning/students/xwords/index.html

http://www.nytimes.com/learning/general/navigator/index.html

TUTORIALS AND FURTHER LINKS

Connecting to the Internet and starting exploring the World Wide Web might be fascinating, exhausting, annoying or challenging,  depending on access and skills.   Access is not always possible to control in this part of the world,  but a good start and ability count and the sooner we get the skills the better.

For those new or not so new to the www I would warmly recommend searching among some of the following valuable tutorials.

http://www.lib.berkeley.edu/TeachingLib/Guides/Internet   -   A totally revised (in Fall 1999) tutorial     which should be included in everyone´s bookmark file. Not to miss.

http://www.abdn.ac.uk/diss/webpack/intro.hti   -   This is an excellent information pack from the University of Aberdeen, divided in 3 sections: Using the Web, Authoring the Web and Mastering the Web.

http://lcweb.loc.gov/global/internet/training.html   -   The USA  Library of Congress Internet                 Resource Page containing  links to collections of Internet Guides, Online Courses and Tutorials

http://www.ucl.ac.uk/Resources/Searching/findmail.htm  -  Internet Resources Guide: Searching for an email address:

http://www.ucl.ac.uk/UCL-Info/Divisions/Library/Library.html  -  University College, UK  Library Services:

http://www.library.ualberta.ca/   -    University of Alberta Libraries

http://www.windweaver.com/searchhelper.htm - How to search effectively directories tools and search links.

http://www.bgsu.edu/departments/tcom/tutors2.html -  Best of the Internet Tutorials - Universities and Organizations

Other Resources:

http://www.hwg.org/resources -  WWW Development Resources

http://www.rgu.ac.uk/~sim/research/netlearn/teaching.htm - A resource for teachers, but where learners will find lots of valuable links and material.