How do you use the implied volatility index? (B Brief)

"One of the things we look at is when you get an earnings beat or miss, how much does the market tend to move?"
"In fact, the higher the volatility, the more the market pays for a beat, and the more the market punishes a miss."
"In earning season, when the volatility is high, that is actually time to be focusing more on fundamentals and less on the macro."