Cut some more content in part 1

[tobyhodges]

Experience from recent trainings shows that, although the training is generally very well received, we still have too much material to cover in the time available for part 1. We should review our episode-level learning objectives and identify candidates to cut out.

[tobyhodges]

Based on discussion with @MikeTrizna and @anenadic, I am going to try to cut down content on misconceptions and MCQs, rolling those into the general discussion of different exercise types.

[tobyhodges]

I might combine this with an attempt to include more discussion of exercises for lessons that are more conceptual and less applied, e.g. Instructor Training, this training.