How to Be a Millionaire by Age 25

Wish you were as wealthy as this guy?

Wish you were as wealthy as this guy? He's Mark Zuckerberg, co-founder of Facebook, and his super-geek-to-billionaire story is the basis of the hit movie The Social Network.

"Young people are just smarter," he told a Stanford University audience in 2007. He started Facebook from his Harvard dorm in 2004 as a sophomore. Now he's a 26-year-old philanthropist, recently donating $100 million to the Newark, N.J., school district.

Zuckerberg's youthful fame and fortune makes for a riveting tale. But across America every year, plenty of entrepreneurs make their first million under the age of 25, some in high school. It takes vision, smarts, determination

and a little luck.

Here are eight millionaires, all of whom made their first million by 25, with advice for achieving prosperity.