Write well. Write often. Edit wisely.
Help for setting up and using dependent (subordinate) clauses. Tips include when to use commas.
Is it a comma before which or before who or before that? Are there really rules and do I have to follow them in my fiction? Tips for comma use with essential and non-essential phrases and clauses.
Even professional writers might need a review of comma use. See what the wrong use of commas can do to a reader who otherwise loves your story.
Punctuation rules are not always fun to study and learn. Yet a strong grasp of the rules can make you a stronger writer. Here are a few of the rules concerning commas, presented with a different slant—learn when not to use a comma.