Khan Academy
Khan Academy: Italics, Underlines, and Quotes
Learn how to use italics, underlines, and quotes when writing titles of books, movies, songs, etc.
Other
Sta: Punctuation and Capitalization Rules
Use this handy guide for a quick reference to punctuation and capitalization rules. Includes rules for end marks, apostrophes, capitalization, commas, quotation marks, and many more!