Somewhere recently, a friend or a wealthy relative mentioned they're "an LP" in a venture fund. You nodded. You didn't ask what that meant, what they actually own, or when they get their money back.Venture capital has built some of the largest fortunes in modern finance. It hasn't built an instruction manual for the people funding it. Founders get accelerators and pitch coaches. Fund managers get conferences and trade press. The limited partners, the family offices, the angel inves...