I was having some trouble with comma placement. I took some time studying the subject and wrote this to help anyone who may need it. A Little Lesson in Comma Usage An independent clause is a complete idea. It generally contains a subject and a verb. An independent clause can stand alone as a sentence. A dependent clause is not a complete idea. It can not be used by itself to make a sentence. When you combine two independent clauses with a coordinating conjunction (and, but, for, or, nor, so, and yet), use a comma. When you combine an independent clause with a dependent clause, a comma is not required. Example: Look at these two sentences or independent clauses: The boy ran down the street. He stopped at the door. Let's combine them using the conjunction 'and': The boy ran down the street, and he stopped at the door. (comma require – two independent clauses) The boy ran down the street and stopped at the door. (comma not required – you have joined a independent clause with a dependant clause.) Another option is to fuse the two independent clauses using a semicolon, but it should only be used if the ideas are closely related. *PLEASE SEE DWSPIG2'S CORRECTIONS ON THIS POST.