[when asked where to learn about robot parts] ...some forum called Chief Delphi. I hear the people there are pretty knowledgeable about this robotics thing. - EricH [more]
You can find videos by searching YouTube for “GaryWHedge”, or “FIRST Robotics San Diego” or by team number, using the Chief Delphi standard to prefix it with “frc”. For example: “frc330”, “frc1717”, etc.