Case studies on marketing.

Turned a $1,000 loan into a New York real-estate firm sold for $66 million

Built a global cosmetics empire from a kitchen and invented gift-with-purchase

Banker who quit at 50 to build Nykaa into India's top beauty retailer

Bought a 6-store Seattle roaster and built the world's largest coffeehouse chain

Built one of America's first great Black-owned enterprises from a homemade hair remedy

Turned a talk show into Harpo and became America's first Black woman billionaire

Bootstrapped Spanx from $5,000 in savings to a self-made billion-dollar brand

Co-founded Apple in a garage and rebuilt it into the world's most valuable brand