Once you have a solid value proposition, you need to find and contact the right angel investors for your startup. You can search online platforms and databases, such as AngelList, Crunchbase, or Gust, that list and profile angel investors by industry, location, and investment criteria.

Calculating the pre-money valuation isn't difficult. But it does require one extra step—and that's only after you figure out the post-money valuation. Here's how you do it: Pre-money valuation = Post-money valuation - investment amount.

Super angel (or "super-angel") was a term used in the early 2010s to describe venture capital investors who had once been angel investors and subsequently raised small venture capital funds. Super angels share some characteristics of both angel investors and venture capitalists.