University of Chicago – Grammar Resources
This portal was created by the University of Chicago Writing Program. It covers shorter and longer grammar guides, ESL resources, scientific and technical writing, usage, and so on in an entertaining way.
UIUC – Grammar Handbook
This no-frills handbook from the University of Illinois, Urbana-Champaign, explains and illustrates parts of speech, phrases, clauses, sentences and sentence elements, and common problems of usage.
Guide to Grammar and Style
This is an A-Z listing of grammatical terms and individual words and phrases (“irregardless,” “try and,” and many more) which may cause trouble.
Guide to Grammar and Writing
An excellent site created by Professor Charles Darling at Capital Community College. Among other resources there are exhaustive explanations of grammatical concepts, abundant help with writing and research, and dozens of quizzes to check comprehension of grammar and usage.
Purdue University Online Writing Lab
This site provides extensive coverage of grammar and writing topics. The handouts (also available in printer-friendly versions) cover writing strategies and genres, research steps, punctuation, capitalization, sentence structure, parts of speech, and more. There are interactive exercises as well as rules and examples.
The Basic Elements of English
Sponsored by the English Department at the University of Calgary, this site offers tutorials on parts of speech, sentence elements, punctuation, and word use. Each brief tutorial ends with a quiz. There is also a marking guide.