ESL Resources for Students

Longman Dictionary of Contemporary English: Straightforward definitions and examples.
Merriam-Webster Online: One of the most popular dictionaries.
Oxford English Dictionary: The most authoritative dictionary which includes word histories with historical textual examples.
YourDicitionary: Online dictionary for 150 languages with contextual examples.
Visuwords: Interactive visual dictionary showing the relationships between words, their definitions and other related words.
Academic Word List: A list of the 3,000 most commonly used academic words and their definitons.

Grammar at About.com: Thorough grammar and writing explanations and a variety of practice activities.
A Guide to Grammar and Writing: Explanations, activities, and quizzes on grammar and writing from sentence structure to research essays.
Self-Study Grammar Quizzes Self-paced quizzes on a variety of grammar issues.
ESL Blues. Highly recommended site for pre-intermediate to high intermediate level English.
English Language Centre, Study Zone, University of Victoria, British Columbia. Interactive grammar exercises for students at the intermediate to advanced level.
Grammar Bytes Videos, interactive exercizes and quizzes on grammar.
English Grammar Online Variety of exercizes and explanations on writing as well as reading passages on different topics.

American Idioms Alphabetical list of idioms with definitions and example usage.
Academic Word List Exercises based on the 3,000 most often used academic words in English.
Quizlet Customizable vocabulary and other study flashcards.

Times in Plain English: A strightforward version of the articles in the New York Times.
News ELA: National and world news that can be adjusted for reading level.

Lingual Net: Collection of video clips from television and movies with transcripts.
English Listening Lounge: Listening passages arranged by topic, purpose, and level.
National Public Radio: Listen to daily news and commentary.
Randall's ESL Cyber Listening Lab: A large collection of digitized audio cuts organized by levels.
Science Friday: Weekly radio show on technical topics.
Voice of America: Listen to international news in English and many other languages.
Listen and Read Along: Specialized English broadcast radio programs that are easy to follow and enjoy.

Using English for Academic Purposes: Explains conventions of academic writing including expectations in word choice, documentation, and organization for various disciplines.
What is an Academic Paper, Dartmouth University: Detailed explanation of the expectations and aspects of writing for college from creating an informed argument to focused revison.
Paradigm Online: Explanations and activities to illustrate and practice the writing process and writing informal and formal essays.

English as a Second Language: at About.com Explanations and activities for reading, writing, speaking, and listening for all levels of English langauge learners
ESL Town: Learn English online: games, pen pals, chats, quizzes, and grammar.
Interesting Things for ESL/EFL Students: Quizzes, proverbs, anagrams, and other puzzles for language learners of all levels