Founders should learn how to do sales because you'll need to learn to know your customer. Talking to customers and sales are effectively different sides of the same coin. You can't do sales if your product is bad unless you've had some effort in trying to sell it first. A love for solving customer problems is really infectious. If you're passionate about solving this problem, they will be able to tell. It's probably the easiest job to learn in a startup.
How do you get your first customers? YC Group Partner & former Head of Growth at Airbnb, Gustaf Alströmer, gives tactical advice to answer this question for all kinds of companies — whether you're B2B or B2C — and discusses why it's important for founders to do sales early on.
Apply to Y Combinator: https://yc.link/SUS-apply
Work at a Startup: https://yc.link/SUS-jobs