Once the doors are shut your flight attendants will give a safety demonstration and/or there will be a video shown showing the important safety briefing.
DO NOT SKIMP ON THIS!
It is amazing how many people ignore this briefing. And, dear FoF people, DO NOT let it upset you. No one is saying anything bad will happen. It is simply useful information to make YOU safer.
Like all things, the more information you have, the more YOU are in control of yourself, your life, and your destiny.
Here’s one of the better safety demonstrations available on the web: