Ask HN: What do you wish you'd known to get your first 100 customers?

For those under 100 customers:

What do you feel would be helpful to know right now to get your first 100 customers?

For those with 100+ customers:

Was it important to know who your competitors are? Or did you ignore them?

Did you do a product launch? Where/how did you launch (e.g. did a press release + outreach, Hacker News, Reddit, Product Hunt)? Did you consider it successful? Or a flop?

How did you determine your price point? Did you have any pricing strategy?

What was your go-to-market strategy after the launch?