how to work with Linq in asp 3.5

Hi 
I am learning to work with Linq in 2008.
so can anybody tell me which is the best website to learn linq and on which forum i can post my queries regarding to Linq.
I dint find any post related to Linq on this site.
DO we have to install any other software to work with LinQ. I have VS 2008 and sql 2005.
DO i  wll have to install any other software. If yes please let me know..
Thanks in advance..

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