Robert Kiyosaki, author of "Rich Dad Poor Dad," warns that the world is headed for the biggest crash in history. Learn how to prepare for the crash by getting out of debt, building up your cash reserves, and investing in assets that will hold... moreRobert Kiyosaki, author of "Rich Dad Poor Dad," warns that the world is headed for the biggest crash in history. Learn how to prepare for the crash by getting out of debt, building up your cash reserves, and investing in assets that will hold their value in a downturn.