Dictionary.com Grammar, Usage and Style
- Style Guide
- The Blue Book of Grammar and Punctuation - Jane Straus' reference guide and workbook
- The Chicago Manual of Style - A publication of the University of Chicago Press
- Common Errors in English - By Paul Brians. Simple, entertaining explanations of common errors in English
- English-Zone.Com - the BEST English-Learner's site on the 'Net!
- Guide to Grammar and Style - By Jack Lynch
- Sharp Points - Bill Walsh's "vociferous rants" on matters of style
- Silva Rhetoricae: The Forest of Rhetoric - A guide to the terms of classical and renaissance rhetoric. By Dr. Gideon Burton of Brigham Young University
- The Vocabula Review - A society is generally as lax as its language.