Here's one quick take-away: Become a student of current affairs and think about how you'd handle issues in the news:
We don't know what the next crisis will be, but we do know that it's coming. So pay attention to how others are handling crises. Watch the news closely and envision yourself in the crisis. Imagine that you're Robert Gibbs, and ask, how would I handle that? As PR professionals, we should be students of the news, instead of just consumers.