This video is explaining what is Bitcoin, why it was created, how it works, how its usability got sabotaged, its name hijacked, and how it had to be re-branded into Bitcoin Cash.
Everyone that is already in or thinking about getting into Bitcoin / Crypto space, must know these things.
How SegWit destroys security of transactions, and why SegWit is an Altcoin: https://www.yours.org/content/segregated-witness-removes-one-of-bitcoin-s-data-integrity-checks-cce11f4ee319
How Lightning system works (by Decentralised Thought):
Why Lightning does not scale (by Decentralised Thought):
My video is at DLive