13. Take Notes
Not only will you thank yourself later for jotting down all those details, your boss will recognize how much you value the interaction and will be more likely to be available for follow up queries.
Finally, if you really want to know how to impress your boss at work, consider that bosses like to talk and they appreciate a good listener. If you can earn a reputation as someone who pays attention and gets things right the first time around, career success is at your fingertips. Learn to listen and well.