Those that are just starting off in their careers can learn from the best. Jack Ma (Alibaba), Richard Branson (Virgin), Warren Buffett (Berkshire Hathaway), Oprah Winfrey, and Sheryl Sandberg (Facebook), share their experience in the business world. From leadership, mentoring, education, handling failures, and letting go of perfectionism, these living legends of the business world impart what has worked (and not worked) for them as they worked their way up to where they are today.