UT CMPT 1700 class?

Why did I take CMPT 1700 class (Podcasting, Vodcasting and Blogging) at UT? I took this class to learn more about these tools. I have an interest to effectively make use of them in social networking and possible groups I belong to. I would like to know what they are and how most people use them, how to use them effectively and how and where to use them so that you get the most out of them.