i'm told you can make real world money, working, virtually, in the game, "second life". how?

Answer 1

I'm not familiar with that game, but in principle, there is some resource that takes much time/effort to obtain, let's call it "gold".

You play the game and accumulate gold, then offer to sell it to other players for real money.

The going rate depends on how hard it is to get the "gold".

I have seen it work in other games, but it is risky. Some players may be running scams.
You will not get rich playing Second Life, or any other game.