I know he mentiones it briefly, yeah. But it'd be nice to know more details, for example
how volatile the coins need to actually be and where to find them(I'm guessing binance is too big now because I went through all the coins with ETH pairs and they aren't that volatile being 30% up/down every day - unless you want to be making 3% gains imo you have to wait days for dips and then days to recover and with 30-50$ per trade even with 30% gain that takes a long time to build a roll). Also how much of the bankroll to invest in a single trade when you only have $500 and other general mistakes and tips he'd give to someone trying to build a solid roll from just a few hundered bucks besides the obvious strategy of buying dips on 1h candles.

As for you I don't know why would you trade with 12 bucks unless it's just for fun or to make a few trades to gain confidence. I want to make some side income from this so that I don't need to work during the summer for 3 bucks per hour so I'm taking it as seriously as I can.