Here is the second video on this Volatility series course: https://youtu.be/ne20yJQGF0s
It shows how to compute and analyze volatility values. It introduces the concepts of realized volatility, future volatility and implied volatility as well as the correct way to interpret current VIX readings.
This lesson went a bit longer than planned at about 41 minutes long so please be patient with :)
As usual any feedback is greatly appreciated.