Rich Dad's Cashflow Quadrant by Robert T. Kiyosaki..
The Cashflow Quadrant is the follow-up guide to finding the financial fast track that best works for you.
It reveals the strategies necessary for moving beyond just job security to greater financial security by generating wealth from four selective financial quadrants. This work will reveal why some people work less, earn more, pay less in taxes, and feel more financially secure than others. It's simply a matter of knowing which quadrant to work in.
