If you do your homework online, you know about what the car should cost.

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Do your homework to make sure what you are buying is well diversified with top sector exposure in defensive categories and that the top holdings are fairly evenly weighted.

FORBES: Low Volatility Funds May Not Be As Low Risk As You Think

What I like about this book is, first, it has layers of resources to help you do more homework and sleuthing.

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No matter what is going on in your lives, you have to go to school and you have to do your homework every day -- every day.

WHITEHOUSE: The White House