Here are links to the resources I've used over the last couple of years. By no means is this any sort of FIRST-official list; they are my favorites. Please feel free to add to them!
I understand that there are links on the left side of CD's portal page, but those do not directly link to interesting documents on, for example, manipulators.
(IMO) Best, most comprehensive, engineering process paper that high school students can understand:
http://www.chiefdelphi.com/media/papers/2303
Need ideas for fundraising, recruitment, or management?
http://www.firstnemo.org/resources.htm
http://www.usfirst.org/roboticsprogr....aspx?id=14034
Design & Build Resources:
http://www.andymark.biz/presentations.html (most up-to-date)
http://team1323.com/pages/resources.html
http://thinktank.wpi.edu/Portal (most comprehensive)
http://www.chiefdelphi.com/media/papers/ (alot of good, but it's not organized so use the search tool)
Data Resources
http://www.matweb.com (Material strengths and densities)
Programming Resources
http://www.simbotics.org/controls (C++, best I've found but may be out of date for 2010)
http://forums.usfirst.org/showthread...3413#post33413 (java)
http://thinktank.wpi.edu/tag/39 (Labview)
CAD Resources:
http://team1323.com/cad/index.html
http://www.firstcadlibrary.com (all FIRST specific)
http://www.3dcontentcentral.com/default.aspx (Best for Solidworks)
http://www.andymark.biz -- all of their products have a link to CAD, including the KOP Frame
Rookie Resources:
http://moe365.org/moementum/moementum.php
http://www.battlefieldrobotics.org/F.../AllItems.aspx
My Favorite Supplier Sites:
http://www.mcmaster.com (Easy to use with ALOT of different items)
https://sdp-si.com/eStore/ (Mechanical parts, and I've found it's esp. good for sprockets; also very easy to use)
http://www.smallparts.com/ (Like mcmaster & sdp-si)
http://www.martinsprocket.com/
http://www.bostongear.com/
http://www.andymark.biz/
http://www.banebots.com (Motors, transmissions)
http://www.robotshop.ca/sensors.html (Sensors)
http://www.sparkfun.com/commerce/categories.php?c=23 (Wonderful for sensors, but shipping may be delayed due to a crazy giveaway they're doing today 1/7/09)