I did a session for the Colombo .NET User Group on Linq. The purpose of the session was to introduce Linq and explain about some of the new features in C# and VB.NET in the context of Linq. I managed to do small introductions to related technologies such as Linq to XML, Linq to SQL and Linq to entities. Though this was an introductory session, i guess i had to squeeze a lot of things within 1 1/2 hours.
Maybe on the upcoming User Group sessions we can take specific Linq topics and dive deep within it.