Uh guys so he's asking what do I mean. Can someone like, send me a link to a youtube video for the tutorial..
It really is not that hard.
Chances are high you are being scammed.
If he doesn't know how to sign a message, he could have just googled it.
If he doesn't know how to google, he doesn't know how to "hack".
He is an impersonator. And most likely a script kiddy with no clue whatsoever.