Additional samples and/or documentation may be available from the following sources:
The LINQ Project site on MSDN for general news and information about LINQ.
The Visual Basic Developer Center for the latest news on using LINQ with Visual Basic.
The C# Developer Center for the latest version of the C# 3.0 specification and other information.
The LINQ forum on MSDN is the best place to post questions related to LINQ.
Whitepapers provides a link to whitepapers that provide additional information about LINQ.
This is a wiki site dedicated to LINQ, it has over 125 pages of reference material.
There are three 5 Minute Overviews that you might find useful when starting your LINQ journey -
LINQ to Objects - 5 Minute Overview - http://www.hookedonlinq.com/LINQtoObjects5MinuteOverview.ashx
LINQ to SQL - 5 Minute Overview - http://www.hookedonlinq.com/LINQtoSQL5MinuteOverview.ashx
LINQ to XML - 5 Minute Overview - http://www.hookedonlinq.com/LINQtoXML5MinuteOverview.ashx