Troy Magennis has started a community resource web site about LINQ: Hooked on LINQ.
I've uploaded and started to prime content on what I hope will become the community repository for all things LINQ related.
My motivation is simple; I want one place that I can go to get my hands on official and community based LINQ resources.
The site already has some content and pointers to LINQ resources from everywhere. It's a wiki so you'll be able to participate and publish content as well. Go there and contribute.
Oh, and don't forget to visit Troy's blog. It also has very interesting content about LINQ.