There are a lot of operations that you can do with LINQ.
It’s a rich query language.
You can find many LINQ articles here in aspalliance, go on
and read them. Also I recommend you to have a look at the MSDN 101 LINQ samples;
you can find there all LINQ statements with a code sample.
http://msdn.microsoft.com/en-us/vbasic/bb688088.aspx