I recommend starting with Twitter because you can get instant gratification.  It’s quick and easy to get started.  And besides….it’s all the rage now!

Below are links to help you depending on what you need to get started:

What is Twitter?

Twitter for Business

How to Use Twitter with Your Cell Phone

Shortening and Tracking Links You Post on Twitter

Video Tutorial for Setting Up Twitter

Twitter Buttons for Your Blog

How to Link Twitter to update in Facebook