There are many rules about correct comma usage. A misplaced or missing comma can completely change the meaning of a sentence. Many of us know to use commas in lists, addresses, and dates. However, the rules about Independent and Dependent Clauses, Subordinating and Coordinating Conjunctions, titles, and adjectives are often less well-known. This pdf summarizes the key comma usage rules and provides relevant examples for clarification.
Check out our YouTube tutorial on commas.