The topic that resonated most with me was:
"Don't over-react to minor disruptions, but be sure to react." I have learned this with experience in the classroom that there are many situations where students will test the limits sometimes even unknowingly which is why it is so important to have an appropriate measured response to the disruption. I have found that having a disruptive student "table" their discussion for another time, usually makes them acknowledge their disruption (chatting with another student or talking out of term). I will definitely implement the "I" not "you" approach to recognizing the behavior and correcting it. That too makes it less confrontation and as stated before some students do not recognize their behavior as truly disruptive, and it will be appreciated over being singled out negatively.