'RealMoney' Radio Recap: Market Madness

"If you're in college taking a course in economics, or if you hold a steady job and are just barely getting into the world of investing, or if you're just plain curious about the world around you, today is a great day to learn a lot about the stock market," Jim Cramer told his "RealMoney" radio show listeners Friday.

That's because after six lean years, Wall Street is excited again as stocks representing "every nook and cranny of the economy" post a broad-based rally.

It's not just tech or medical, Cramer said, and many of these companies are reaching all-time highs -- or highs not seen in six years. "This rally has breadth," he added. ...