1.1. Don't be that guy who leaves the cap off their pen. It's just basic human decency.
Read on to learn more about basic human decency.1.2. Pay attention when someone's talking to you. It's not that hard, really.
1.3. If you see a turn signal, use it. Don't be that guy who just assumes everyone else knows what you're planning to do.
Proceed to Section 2: The Art of Not Being a Jerk in Public