Beautiful response sir. To add more value, I'm going to assume that some people may never have nor had knowledge on cryptography. But no fear fam', Christof Paar has 24 videos, explaining from zero (literally, zero) to hero (man-in-the-middle attack, certification stuff, etc etc).

The full 24 videos you'll find it in his Youtube's channel. And if you're a book-lover, check his book "Understanding Cryptograhpy", the pdf version is for free.