Bias-free Language

• http://www.sharewords.com/copyedit/biasfree.htm - Demonstrates how to create a website with language that is inoffensive and welcoming to the user.
• http://www.sharewords.com/copyedit/substute.htm - A list of potentially offensive words and terms, and possible, bias-free substitutes for them.  
• http://www.apastyle.org/sexuality.html - Tips on how to create unbiased writing about or directed towards lesbians, gay men, and bisexual persons. This site is maintainted by the American Psychological Association's Committee on Lesbian and Gay Concern.
• http://www.apastyle.org/race.html - Suggestions on how to prevent racial and ethnic bias in writing.  This site was created through efforts by the American Psychological Association's Board of Ethnic Minority Affairs and the Publications and Communications Board.
• http://www.vcil.org/stakeholders/business/index.html - Offers links to websites on how to avoid biased language in business settings. Links include websites on avoiding all bias in language, and eliminating biased language towards the disabled.
• http://owl.english.purdue.edu/handouts/print/general/gl_nonsex.html lists word-choice alternatives for writing with bias-free language.

Clarity and Conciseness

• http://www.english.uiuc.edu/cws/wworkshop/ - Provides a thorough description of what "clear writing" really means.
• http://www.utoronto.ca/writing/wordines.html - Some "danger signals" that could help you avoid wordiness.
• http://owl.english.purdue.edu/handouts/general/gl_concise.html - Purdue offers tips on concise writing and eliminating wordiness.
• http://muextension.missouri.edu/xplor/comm/cm0201.htm - University of Missouri lists ten principles for clear writing adapted from "The Technique of Clear Writing."
• http://www.llsc.on.ca/cw_before_and_after.html - Gives examples of both clear language and confusing language to show the contrast between the two and explains why clear writing is important. Focus is on business writing.

Coordination/Subordination

• http://www.gpc.edu/~lawowl/handouts/conjunctions.pdf - A concise two-page Adobe Acrobat downloadable form providing lists of coordinating and subordinating conjunctions as well as conjunctive adverbs.
• http://lsc.edcc.edu/Handouts/5--Coordination.php - This site organizes the principles of coordination and subordination visually so they can be taken in at a glance.

Effective Sentences

• http://employees.oxy.edu/jgarrett/sentences.htm - Entitled "Effective Sentences," this site combines information on parallel structure with information on coordination and subordination in order to explain how to create effective sentences.
• http://www.bedfordstmartins.com/guidebook/exercise_c.htm -
  To help you practice writing effective sentences, this website features eight exercises: missing words; shifts in person, number, mood/voice, or direct/indirect quotations; misplaced words, phrases, and clauses; dangling modifiers; mixed constructions or problems with word order; faulty parallelism; coordination and subordination; and combining sentences.

Parallelism

• http://web.uvic.ca/wguide/Pages/SentParallel.html - Explains the principles of parallelism in simple language and gives clear direct examples.
• http://leo.stcloudstate.edu/grammar/parallelism.html - Nice because it gives a list of connectors that can be used between parallel structures.
• http://grammar.ccc.commnet.edu/grammar/parallelism.htm - Gives a fairly technical definition according to Strunk and White's Elements of Style. There are quizzes at the end.

Usage

• http://www.infoplease.com/ipa/A0200807.html - Infoplease's list of "Easily Confused or Misused Words" provides a standard glossary of usage.
• http://www.wsu.edu/~brians/errors/ - Discusses American English usage and contains a comprehensive list of common problems of usage, their correct form and an explanation, along with links to other usage websites.
• http://www.heptune.com/english.html - "Heptune's Book of Cheesy American English usage" is an amusing and imaginative discussion of trite and incorrect usage.
• http://www.yaelf.com/toc.shtml - Everything you ever wanted to know about usage, including accents and speech, current usage in the news, definitions, etymology, shades of meaning, folklore/proverbial expressions, grammar, jargon and slang, spelling, the history of languages, phrase origins, and other interesting topics.
• http://www.dianahacker.com/bedhandbook/subpages/language.html - An interesting group of discussions about common English usage and grammar problems.

Vocabulary

• http://www.ucc.vt.edu/stdysk/vocabula.html - This site provides some interesting facts about how we develop vocabulary as we grow physically and intellectually.
• http://wordsmith.org/awad/index.html- Wordsmith. org offers a Word.A.Day and has done so since 1994. A group of self-confessed word-lovers from over 200 countries, Wordsmith provides archives of their words for the day.
• http://www.vocabvitamins.com/?src=google_cam5_key__vocabulary_ - This is a site that must be joined in order to receive maximum benefit. A new word each day is a "Vocab Vitamin;" lists are provided of previous week's words as well as quizzes on those words.

• http://www.wordorigins.org/index.php/big_list/ - Interesting discussion of common idioms and their origins.

Word Choice

• http://www.transaction.net/web/tutor/text/orwell.html - Author George Orwell says the "meaning" should "choose the word." This site contains Orwell's "Six Rules" and "Four Bad Habits."
• http://humanities.ucsd.edu/writing/workshop/word-choice.htm - A thorough discussion of word choice.
• http://grammar.ccc.commnet.edu/grammar/plague.htm - Arranged in an alphabetical list of 40 "Plague Words and Phrases," each entry offers a suggestion or solution for avoiding the problem caused by the "plague" word or phrase. Very useful.