CM is going to be different than most of what you have done so far due to the fact that it was gamed pretty badly back in the day to farm Philosophy Tomes, so basically any CM you do will have 1-7 people trying to "speed run" the dungeon.

The best advice I can give you in CM is to listen to whomever has taken charge, and make sure people aren't dying from getting enmity.

You have a great attitude, so continue to learn and get better!