11 Rules of Grammar - concise writer's guide to the most frequently violated rules of grammar, with dynamic links to more detailed online references.
Able Writer: A Rhetoric and Handbook - describes an English composition handbook that treats pre-writing, outlining, English grammar, usage, word choice, dictionaries, spelling, punctuation, and writing college research papers.
Antagonyms - words that have opposite meanings (e.g., "bad" can mean bad or good depending on usage).
Basic Guide to Essay Writing - a step-by-step guide to writing a basic essay. Includes links to other on-line essay resources.
Common Errors - discussion of errors in English usage which are so common that some people don't recognise them as errors.
Common Errors in English - site which simply and entertainingly explains a number of common spelling and usage errors in English.
Darling's Guide to Grammar - prepared by Professor of English/Humanities Charles Darling for his English courses at Capital Community-Technical College.
Distinctionary - synthesis of a thesaurus, dictionary and personal development course.
English Grammar Clinic - your grammar questions answered by professional English language instructors.
Focusing on Words - This advanced English-language site is here as a guide by your side so you can experience the wonder of words and the English language.
Handbook of Rhetorical Devices - definitions and examples of more than sixty traditional rhetorical devices, which can be useful in improving the effectiveness, clarity, and enjoyment of your writing. By Robert Harris of Southern California College.
Heteronyms - words that are spelled identically but have different meanings when pronounced differently (e.g., wind or lead).
Loquacious Language - a regularly appearing language column published by Michael Tseng in his school newspaper, inspired by William Safire.
odd prose - selection of odd sentences from student essays. This page exists to encourage students to improve their proficiency in written English. Includes common errors found in student papers.