Here are some educational and useful LINQ resources, which you might want to check out. It's a great way learn more about the fantastic world of LINQ.
If you know about an awesome LINQ resource you believe should appear on this page, feel free to drop me an email.
LINQ in general
Linq for F#
|Query Expressions (F#)
|F# has plenty of query operators which are not available in C# and VB.NET. Here is a list of the operators.