Three things you should know:

Yo-Yo Ma says staying at the top of your game means constantly reinventing yourself. We talked with the cellist about why he's never stopped exploring musical territory.

Lord Byron was the Johnny Depp of the 19th century. Professor Sharon Marcus explains how celebrity has (and hasn’t) changed over the years.

You, too, can become a YouTube star. Variety’s Andrew Wallenstein and Tubular Labs’ Allison Stern tell us why the Internet is the new Hollywood.