Are you serious? he can just stay months in order to reach at least $100, it is not worth it.
If he is really decided to start doing daytrading, why would he just put ten dollars? it is not even worth a cheap lunchtime with your mummy.
just go start with 10 $ , and try to learn time by time , so you can adapt with the atmosphere of cryptocurrency
Be careful, just start trading with much money as you can, but do not put your life savings in here because you can suddenly lose your funds and that would be a chaos. You all know that exchanges have been closing for a long time, and if you put your funds on the wrong site, you are exposed to lose all your money.