Official Blender Home Page: http://www.blender.nl/
Kiernan Holland's “Suspended Animation” Blender Page: http://www.unm.edu/~kholland/blender.html; Kiernan is one of the Blender gurus. In his own words, he is a “walking Blender manual.” You can find some of his animations and a few tutorials here.
Blender News Server: “News Server” on Blender home page. The single greatest resource so far for Blender knowledge. Almost any question you could ask has already been asked and answered.
Blender Mailing List: To subscribe, send a message to firstname.lastname@example.org with the text “subscribe blender3d email@example.com” in the message body (without the quotes). To post, send a message to firstname.lastname@example.org.
Bart Veldhuizen's Blender Page: http://members.xoom.com/blender/. You can find some Blender animations here and also a handful of tutorials.