A complete summary of linesman responsibility is found on pages 5-2 to 5-16 of the Hockey Canada Officiating Program
Basics of a linesman in the 3 referee system
At 0:49, "each linesman takes one half of the ice". THis is no longer the case, you and your partner may switch ends as needed.
At 3:19, the linesman jumps on the boards. Linesman are encouraged not to do this. Rather, bump-and-pivot out of the way while facing the play.
At 4:19, niether of the linesmen held the benches. It is important that Linesman help the referee by communicating with the benches that they must wait at the end of the periods.
Note, this video is meant to be a starting point to develop your skills. It is not a Hockey Canada video but does provide basic ideas about lining.
How to Skate Like a Referee
Basics of the referee in the 3 referee system
A complete summary of referee responsibility is found on pages 4-2 to 5-11 of the Hockey Canada Officiating Program
At 3:16, the video states "...8 or so seconds then the faceoff will begin." In Hockey Canada, the home team has five seconds to change, the visiting team has five seconds to change, then the puck is dropped five seconds after the visiting team changes.
At 3:59, the referee calls a penalty. He blows his whistle then makes the single while he keeps skating. The correct procedure is to stop, wait a couple of breaths, lower your raised arm to indicate player, announce player and color, make infraction signal while announcing infraction then procede to penalty box.
Note, this video is meant to be a starting point to develop your skills. It is not a Hockey Canada video but does provide basic ideas about refereeing.