Brian Singerman is an angel investor and a VC at Founders Fund, a San Francisco-based VC, started by former PayPal founders, Slide, Facebook, Zivity, Quantcast, and now Clickable (with the just-announced $14.5 million round raised). In this segment of "Lessons learned," Brian raises important points for entrepreneurs, specifically the virtue of failing fast. "There's nothing wrong with failing fast," Brian said. The problem is that people wait too long to realize they have a failed business model, or spread themselves too thin to ever focus on one business model, he suggested. "Pick one [business model]," he said. "If it doesn’t work. There’s nothing wrong with failing fast."

Brian also says that entrepreneurs have to be willing to be flexible. "Be willing to adapt to what your customers are saying," he said. "Be willing to adapt, and you may find some gems within your product." 

Watch the interview for Brian's advice on why big, lengthy PPTs are a waste of time, and what to expect from a VC meeting.