Apostrophes show possession or contractions, not plurals. E.g., "It's yours," not "It's your's."
Fix comma splices with a period, semicolon, or conjunction. Avoid joining independent clauses with commas alone.
Use exclamation points sparingly. Overuse makes writing appear dramatic and less impactful.
Use quotation marks for direct speech or exact quotes, not for emphasis.
Semicolons join related clauses; colons introduce lists, explanations, or quotes.
Dashes indicate interruptions; hyphens connect words into one concept, e.g., "well-known."
Introductory phrases need commas. E.g., "Running to the store, I forgot my wallet."