Crypto trading is risky even for a seasoned trader. On tho other hand, if you know your stuff good, you can use trading bots and earn.

After 15, maybe after 18 years I would only start showing my sons this kind of stuff. I am certain that they'll pick up fast. But first I'll have to be certain that they can handle the money with wisdom and they can manage the stress implied by trading and so many think to watch out for.

At 10, if they manage to be amongst the first few in the class, it's just fine.