smarties
That young person is Jazz Jennings. A 17-year-old male with the face of a girl, the body of a woman induced by hormones, and the genitals of a prepubescent boy. He is permanently sterile and will never orgasm.
He is the poster child for trans youth.
Here is the link to Magdelen Berns' video. She is a brilliant place to start. She is straightforward and nails it every time. All her videos are worth watching. They are short and informative.
Her 'stoner drawl' grows on you too. And don't be mistaken. She knows exactly what she's talking about.
She was thrown out of her LGBT group at Edinburgh University for saying she wouldn't sleep with a transwoman (she's a lesbian).