If you haven't seen it already, check out Dan Zarella's new book The Social Media Marketing Book.  This is a good read if you want to get familiar with social media marketing.  In this book Dan covers:
- Blogging
 - Twitter and Microblogging
 - Social Networking
 - Media Sharing
 - Social News and Bookmarking
 - Virtual worlds
 - And much more
 
Let Dan take you to school about how social media and inbound marketing are changing the worlds of marketing, advertising and PR.  Below is a cool teaser video for the book.