Friend wants to enter the casino.

Need the help of the community, one of my best friends wants to get into finance and savings now. He often asks me how cryptos and wallets work, because i own some coins and a cold wallet.

I really want to tell him that he shouldn't do it. Or rather, I couldn't explain it to him objectively without him forming his own opinion.

The friendship shouldn't suffer, and I don't want to be responsible if he loses his bet.

What's the best way for him to get information so he doesn't end up with the next shit coin?

Or should he start with moons first?

I am grateful for the support.