MediabistroTV debuts “My First Big Break” today, a new series where we talk to media heavyweights about that break that got them to where they are today. Our first episode features Brian Williams, the anchor and managing editor of “NBC Nightly News.” You know what he’s doing now, and you may know a bit about his past. But did you know he maxed out his credit cards and finally went bankrupt? Williams then took a job in technical operations until that First Big Break came along. He tells us who gave it to him, and how it changed the course of his career.