Lego Mindstorms NXT books

http://www.booksnbots.com/

The ultimate online repository for unofficial LEGO MINDSTORMS NXT books. Written by David J. Perdue.

Microsoft’s Popfly

http://www.popfly.com/

Now you can create a game without writing any code. Try it out, and have fun!

LEGO Mindstorms NXT: A Brief Introduction & Tutorial Part 2

http://mindstorms.video-sponge.com/view/132084-lego-mindstorms-nxt-a-brief-introduction.html

A very nice video of using NXT-G. It is about 9 minutes.