Lego
Links
This is the site for nearly all questions about Lego robotics. There is a knowledgebase, construction guides, manuals, sample code, news a community, and much more. Check here before you look anywhere else.
An amazingly good video based tutorial series that covers everything from the basics to very advanced programming techniques. If you are going to program in NXT-G, these are absolutely essential viewing.
Learn some tips for building with the Lego Technics pieces. For those of you used to building with pure Lego bricks – there’s a lot of good information here.
Some good information on Lego’s official site. There are some building instructions, a lot of developer kits (for those wanting to really hack the NXTs), information on other programming environments, and lots more.
NI software is behind both RoboLAB and the NXT programming environments. Their webpage has lots of good information and some good links to more information.