<p>Welcome to the Purdue OWL. We offer over 200 free resources including:</p><p>. Writing and Teaching Writing . Research . Grammar and Mechanics . Style Guides . ESL (English as a Second Language) . Job Search and Professional Writing</p><p>Web site: http://owl.english.purdue.edu/ </p><p>Click on SITE MAP (on left side of homepage page) – for complete listing of areas covered by the area. Following is just a small fraction of areas covered: General Writing  The Writing Process  What Do You Need to Write?  Invention  Prewriting Introduction  Prewriting Questions  More Prewriting Questions  Symptoms and Cures for Writer's Block  More Writer's Block Strategies  Stasis Introduction  Stasis and Research  Stasis for Teamwork  Thesis Statement Tips  Outline Components  How to Outline  Types of Outlines  Reverse Outlining  Beginning Proofreading  Proofreading for Errors  Proofreading Suggestions  Revising for Cohesion  Steps for Revising  Academic Writing  Rhetorical Situation Introduction  Rhetorical Situation: Audience and Text  Rhetorical Situation: Context, Environment, Setting  Rhetorical Situation: Example 1  Rhetorical Situation: Example 2  Rhetorical Situation: Conclusion  Strong Thesis Statements  Research and Evidence  Organizing Your Argument  Rhetorical Strategies  Logic  Using Logic  Fallacies  Logic in Writing  Does Logic Always Work?  Improprieties  On Paragraphs  Paragraphing  Essay Writing  Expository Essays  Descriptive Essays  Narrative Essays  Argumentative Essays  Conciseness  Eliminating Words  Changing Phrases  Avoid Common Pitfalls  Paramedic Method  Reverse Paramedic Method  Visual-Textual Devices  Punctuation Marks  Choice and Arrangement  Sentence and Clause Arrangement  Variation  Sentence Types  For Short, Choppy Sentences  For Repeated Subjects or Topics  Similar Sentence Patterns or Rhythms  Appropriate Language: Overview  Levels of Formality  Group Jargon  Deceitful Language and Euphemisms  Stereotypes and Biased Language  Appropriate Pronoun Usage</p><p> Punctuation  Punctuation Overview  Punctuation in Sentences  Sentence Punctuation Patterns  Independent and Dependent Clauses  Run On Sentences  Comma Slide Presentation  Commas: Quick Rules  Extended Rules for Commas  Commas After Introductions  Commas vs. Semicolons  Commas with Nonessential Elements  Apostrophe Introduction  Hyphen Use  Using Quotation Marks  Extended Rules for Quotation Marks  More Quotation Mark Rules  Quotation Marks with Fiction  Quotation Mark Exercise and Answers</p>