With our fifth annual guide to making money, we sought advice from a Nobel-winning economist, the papa of all bears, a guy who plays an investor on TV (and actually is one in real life), a diehard gold bug, and possibly the wackiest venture capitalist in Silicon Valley. Included in their advice: Never invest in anything that eats. Go big or go home. Hunt for companies with huge barriers to entry. Buy gold. Oh, and start building a nuclear fallout shelter—fast.