FIRST Website - This website is the official site for the FIRST program. It's a great resource for the FIRST Robotics Competition, Tech Challenge, and Lego League.
Chief Delphi Forums - Chief Delphi is used by almost every robotics team in FIRST. It's a great community website for questions, answers, and general FIRST talk.
The Blue Alliance - The Blue Alliance is an excellent resourse for many robotics teams. It has most of the statistics for each FRC team.
Kansas City FIRST - This website for the Greater Kansas City regional offers volunteer information, past competition media, and KC FIRST news.
AndyMark, Inc. - This is the official website for AndyMark, the company that provides many parts for robotics teams. Mark and Andy have developed numerous mechanical systems while competing in FIRST, and are offering the products listed on this site to help other teams as they compete, develop, and inspire.