so I opened an exchange account for him and set up all the settings. I teach him some basic things in the crypto industry (those will help him to secure the account). I also suggest him to put his Bitcoins in staking, which will give him some APY return in long-term investment. The staking method will help him to grow his Bitcoin. I also suggest him follow the SIP strategy, if he finds any interest in the crypto industry then SIP could be a better option for long-term investment.
While you've done a nice gesture, I'm afraid that you've done it wrong.
I mean that the coins at an exchange aren't really his ("not your keys, not your coins") and the exchange can - for whatever reasons - seize them, get bankrupt, get hacked, have errors and so on.
While for 100$ it doesn't matter that much, your brother may get the wrong impression about the things and may lose money.
And of course, staking and so on, are not Bitcoin features, they're 3rt party stuff, and some DeFi platforms did go wrong (got hacked)...
All in all, it would have been (at least for me) a much better news if you would have helped your brother generate offline a paper wallet (or HD seed) and were keeping the coins there, waiting their fiat value grow naturally.
