Explore Schema.org’s Microdata and HTML5 Markup Types. with over 100 new types, its going to take some practice.
Interested in Rich Snippets
http://support.google.com/webmasters/bin/request.py?hl=en&contact_type=rich_snippets_feedback
Rich Snippets Testing Tool
http://www.google.com/webmasters/tools/richsnippets