video presentation by the author: <a href="https:&#x2F;&#x2F;youtu.be&#x2F;DUGr_Z04SKs?t=12m32s" rel="nofollow">https:&#x2F;&#x2F;youtu.be&#x2F;DUGr_Z04SKs?t=12m32s</a><p>I highly recommend whole Cyberspectrum series, or attending live if you are in the area.