Grammer Post: Comma, Comma and Comma

Comma's can be very helpful or in my case they can be the cause of a red mark on your papers. I struggle with comma's most of the time. I thought I was getting proficient in the introduction comma but soon found I needed a refresher. I found this site at Purdue in their OWL and hope it helps you as well. They are other links when you get into this site so have fun cruising around.
http://owl.english.purdue.edu/owl/resource/607/03/