http://www.amazon.com/Millionaire-Next-Door-Thomas-Stanley/d...
EDIT: Must say I'm not really sure why I was downmodded; this is an excellent book (a classic really) that provides advice from 'actual rich people'. Maybe it's the get-rich-slowly aspect?
I recommend reading Fooled by Randomness first and then, if you're still interested, The Millionaire Next Door.
A lot of rich people didn't theorize much about how to get rich. They just followed their gut feeling about how to execute, and they did it with confidence. Maybe the confidence makes all the difference.
Just saying :)
How about this less scientific but more practical approach. Go ahead & listen to W Buffet, Cuban or anyone else because they made it. You have a limited amount of listening you can do.
Then use sense, common or otherwise.