the first thing he had me do was spar a little with everybody in the gym. i got beat up all night but came in the next day and from there we've been cool.
First thing I did when I walked into my current gym was spar... boy was I tired after those 3 rounds. In the one previous to that was learn the stance correctly and shadow box.
He told me if I really wanted to box to come back in six months. I did and haven't missed a training session since. He's since adopted a new rule with the newbies and makes them all wait 3 months before they can come and train. So far it seems to be working pretty well in weeding out the impulsive people who think trying boxing would be fun or cool and end up quitting after he wastes a week of training on them.
Asked me what I knew about boxing. I fearfully, truthfully told him, "Nothing". He smiled and said, "Perfect." Then sent me to go buy him a coffee.