Below are a number of extended event resources that are worth taking a look at to further understand and learn extended events.

Presentations

• Extended Events - Work Smarter, Not Harder - PASS Summit 2012
• SQL Profiler and Extended Events Cage Match
• Extended Events - Work Smarter, Not Harder (combined)
• Extended Events - Work Smarter, Not Harder - Part 1
• Extended Events - Work Smarter, Not Harder - Part 2
• Performance Tuning With Extended Events

Community

Jonathan Kehayias (Blog | @SQLSarg)

• An Xevent A Day
• SQL Server 2008 Extended Events SSMS Addin
• Using SQL Server 2008 Extended Events
• Measuring “Observer Overhead” of SQL Trace vs. Extended Events

Microsoft

• MSDN Webcast: SQL Server 2008 Advanced Troubleshooting with Extended Events (Level 200)
• Introducing SQL Server Extended Events
• Advanced Troubleshooting with Extended Events
• What’s new for Extended Events in SQL Server code-named “Denali” CTP1

Others

• Investigating SQL Server 2008 Wait Events with XEVENTS
• Getting historical deadlock info using extended events