"Shark Tank" investor Lori Greiner started with...

VIDEO: Barbara Corcoran explains that relationships are all about respect.

Cyber security entrepreneur and "Shark Tank"...

From How to Win at the Sport of Business.

The student teaching the teacher.

When the investors first meet Brian Lim in the...

As the founder of clothing line FUBU and...

Know your numbers and be honest.

That was... awkward.

Self-made millionaire.

Pitch perfect.

Like many teenagers, Kevin O'Leary got his...

In a recent episode of "Shark Tank," Kevin...

One of Kevin O'Leary's first business partners...

"Shark Tank" investor Lori Greiner often comes...

"Mr. Wonderful."

Jishai Evers, a designer based in Amsterdam and...