Ask HN: How are you acquiring your first hundred users?

I have a course on building AI solutions in business (based on success stories from companies in Europe/USA). Sold ~400 seats so far, mostly through my community and word of mouth. No external ads or cold outreach.

The process was classical. Over two years I created a community to sharing cases and insights from building LLM-driven systems. We focused on creating good non-toxic and collaborative atmosphere. No ads or SEO to grow it, standing out by sharing real-world cases and helping others.

Thanks to the community, got 100 customers within the beta-testing period. Then 300 more came over the last 4 months, after opening the sales.

Ok now we move goal posts how to build first 100 community members

When I was starting my community, I joined other similar communities and tried to be helpful there. No ads or links, just answering questions and supporting. People that were genuinely interested to learn more about the topic - opened my profile and followed the links there.

This and interesting content was enough to grow community organically to 14k subscribers over 2 years.

Another approach to speed up the growth - organise some fun event that benefits the entire community, highlights and showcases the participants.

E.g. when I organised last Enterprise RAG challenge, we got 350 submissions from the teams around the world. Plus IBM joined as a sponsor. People were mostly participating not for the prises, but because of the approachable challenge and ability to push state of the art. Plus some were hired away because of the good leaderboard scores.

Article of the winner (just google "Ilya Rice: How I Won the Enterprise RAG Challenge") is considered by some companies as one of the best resources on building document-based AI systems. And the entire community sees it as the result of their work together - further reinforcing the spirit of the collaboration.

People tend to share and spread fruits of their labor and love.