I think Vanguard 500 World Index fund is about the safest bet you can get, right? For those who have no clue about the markets, nor any desire to learn the markets, I think that's a pretty safe bet, no?

He has a decent chunk in his account right now, and enough to invest. As it turns out, his mom taught him well, and he's a good little saver. Right now, he's at 4% annual interest, and even that's a little high for me to believe for a standard savings account. However, a Vanguard index fund could bring him 15 - 25% annual earninings, correct?

Anyone ever give Thai boys investment advice? Any pointers? I think Vanguard 500 World Index fund is probably a pretty good way to go though.