Comas after introductory words or phrase's.

There are a few errors I tend to make with commas. I thought I would brake them down and work on one rule then the other. This week I have been working on commas after introductory word, phrases, or clause. The rule state's to use a comma to separate the introductory dependent clause from the main clause. The introductory dependent clause sets the stage for the main clause and requires a comma to separate them. For more help go to this web site found Here http://owl.english.purdue.edu/handouts/grammar/g_commaint.html Im working on highlighting the word here for the link.