Before we get into today's focus, we need to learn the fundamentals of a part of the investing world that may be new to you. It's the same reason why you wouldn't invest in ABC Drilling & Exploration if you didn't know the first thing about oil and gas. We all know publicly traded companies. Most have some familiarity with private equity, which is broad category encompassing investments into all sizes and types of businesses. Angel investing is at the bottom in scale. It could be a $100,000 investment in a 3-store franchise of local ice cream stores.