Done.

If that is my grandma, I will tell her all the things I know about Bitcoin and guide her to buy his first Bitcoin. I don't want her ask to other people especially if I don't know those people.

I will not introduce her to altcoin but only to Bitcoin as her main investment. I also will teach her about DCAing Bitcoin. But pity, my grandma passed away a long time ago, both from my father and mom's side