Money Mistakes and Billionaire Abodes

Money mistakes you'll want to avoid

Five people share the lessons they learned from their biggest financial gaffes. 

Dangers of trusting a pro 

Also: 

• Car-buying blunders
• Home sellers' goofs
• Choosing rewards cards

Cities that boast the most billionaires

With just 59 tycoons, New York loses its top spot to a new urban epicenter of luxury.

$375.3 billion in total wealth 

Also: 

• Largest waterfront homes
• Swanky bachelor pads
• Athletes' lavish homes