There is not a size fit all solution.... depends on the skills and interest of your relatives. Also on the relationship with your dad...
Maybe my approach will be just correcting your dad every time he makes a mistake and wait for your relatives to ask more questions.
Most of the people who are into Bitcoin, was thanks to the price.
I did one small family presentation using the kids book: " Bitcoin Money: A Tale of Bitville Discovering Good Money". And it was a great way to explain the basics of money and Bitcoin.
That book is great btw.
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I know that, but there surely are certain basics which we can agree upon, no?
I think it could rub my dad the wrong way when I constantly interrupt him, only to point out his mistakes.
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