When a friend asks me about Bitcoin, I first explain the idea that it's not controlled by any government or institution. Then, I touch on the investment side, emphasizing that while it can be profitable, it’s volatile and requires patience.
Finally, I point them to reliable resources for learning more. I always remind them to only invest what they can afford to lose and to approach it responsibly.
He's not asking about the information in reality according to the OP you should tell him what are you gonna give him as a piece of advice as his/her senior in the market.
For the rest your other suggestions to himvare top notch except the first as it's just a piece of information which is might already know as he's entering into a new market.