Your starting point is good. If someone pitched me a product or something like that. I probably thought he was a liar at first. Regardless of whether this person is a friend I know well, always be vigilant against others to prevent being deceived.You can tell him the basics and let him figure it out on his own.
Telling them the basics and leaving them to figure out the rest is what I've learnt to do recently, this is due to the fact that the price of bitcoin is very volatile, me that have been long in this space how to handle the fluctuations without freaking out, but most of this newbies will just keep steering at the price movement and immediately the price goes below their buying price, they begin to call you on phone to complain about the price going down, i had this experience recently and i tell you its not funny, infact, for a long time, I've never been so pissed at a friend .