Some Recommended Online Grammar Resources
University of Chicago Writing Program (a list of resources available online at various sites)
“The Guide to Grammar and Writing” at the website of Capital Community College in Hartford, CT.
OWL: The Purdue University Online Writing Lab
“Online Resources for Writers” at Capital Community College
Englishpage.com © Language Dynamics
Modern English Grammar by Daniel Dies, College of DuPage (IL)
Learn English on the British Council website
A list of resources on Libraryspot.com
The University of Minnesota’s Online Grammar Guide
The Blue Book of Grammar and Punctuation
Grammar Girl: "Quick and Dirty Tips for Better Writing"
The Oatmeal: "How to Use an Apostrophe"
The Oatmeal: "How to Use a Semicolon"