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Grammar Rules

• Finding Subjects and Verbs
• Subject and Verb Agreement
• Pronouns
• Who vs. Whom
• Whoever vs. Whomever
• That vs. Which
• Adjectives and Adverbs
• Problems with Prepositions
• Effective Writing

Punctuation Rules

• Spacing with Punctuation
• Periods
• Ellipsis Marks
• Commas
• Semicolons
• Colons
• Question Marks
• Exclamation Points
• Quotation Marks
• Parentheses
• Apostrophes
• Hyphens
• Dashes

Capitalization Rules

• Capitalization

 Commonly Confused Words

• Commonly Confused Words

 Rules for Writing Numbers

• Writing Numbers

Note: Some English usage rules vary among authorities. For example, the Associated Press (AP) Stylebook is a guide specific for news media and journalists while The Chicago Manual of Style (CMS) is used by many book publishers and writers. The Blue Book of Grammar and Punctuation leans towards usage rules in CMS along with other authoritative texts and does not attempt to conform to the AP Stylebook, which differs significantly in some aspects.