I would never advice a new in crypto to invest first before knowing anything about crypto and bitcoin and full risks involved. when you first said about investment. I thaught you are talking about your charges of teaching them about bitcoin. but then i realized it is about investing in crypto.
No matter how much you clarify them and tell them the risks factors. they gonna come back to you and hold you questionable anytime they lose their money. so I suggest you to first properly educate them about crypto. then let them decide by themselves if they want to invest or not.