Watched a few mins of the video. Noticed some things I think ppl can learn from:

0:50, as the administering referee you HAVE to catch the players on the right that have crossed legs. This is also U2's responsibility. Hitting the whistle and coming in as U2 is totally acceptable and important for starting the game off the right way. R should have caught it first though.

1:10, two possessions in and we already have an official bailing on the rebounding action. Rebounding action is best officiated from Slot and Trail who have the best angles. Trail has to stay engaged to the rebounding action instead of bailing the other way to cover the 1 player leaking out. First responsibility is rebounding, then get where you need to be to referee fast break.

1:10, INC Slot. Blue #3 holds his opponent across the arm while contesting for the rebounding. Slot has the A look at this play, Trail has the B look (but he bailed and can't help). This miss then results in Lead having an IC on the player who got fouled! Need to be strong from Slot and come get this play to help out your Lead.

2:16, INC Trail. Extremely tough play to detect, and thus not downgrading the crew for missing this. Blue #10 clamps his opponent's arm restricting his ability to jump. Lead has no look, Slot has no look, Trail could have taken a step away from the sideline towards the middle of the court to have the A look and referee where his partners can't.

3:17, INC Trail. It's early in the game, could have gotten some easy rebounding cleanup fouls here on either player. They get one chance at contesting the rebound, if they want to camp there and keep swiping it's any easy foul to get and will clean up your game. Trail calls one late as the player breaks the pressure but should have gotten one earlier IMO.

3:48 and 3:56, CNC crew. Excellent job officiating the defense and refereeing offense initiated contact. I see a lot of fouls called on this type of play, especially from Trail where it looks most ugly. And good job matching up similar-ish plays on back to back plays. In the 2nd play the defender wasn't legal but offense initiated the contact which was incidental.

4:43, not the way to come give information. I would have liked an armbar foul on #4 blue during the full-court drive but a no call here is standard for this type of game. Given no foul call from Slot, Lead correctly had the ball last touching the offensive player. Then Slot decides to come (halfway) with information changing the call. This looks terrible. First off, he's wrong. Second, he only goes halfway instead of going all the way to his partner. Third, it is early in the game and everyone accepted the call with minimal protestation. Not the time to waste a correction IMO, unless extremely obvious which this was not. If no one is asking for a change, don't go. Corrections are for those plays that EVERYONE knows are wrong. And by the time the correction is made all the players are on the other end of the court. Looks bad.