Based on your stage and zero budget, here are the three best starting points: Easy Keyword Ranking (#1) — Freelancers actively search for invoice-related help. Target long-tail queries like "how to invoice a client for the first time" or "free invoice tracker for freelancers." Start: Use Ahrefs Free or Ubersuggest to find low-competition terms, write 3–5 focused blog posts, publish weekly. Resources: 3–4 hrs/week, no budget needed. Reddit Marketing (#38) — Subreddits like r/freelance and r/smallbusiness are full of your exact audience venting about invoicing problems. Start: Spend a week just reading and commenting helpfully. Mention your tool only when directly relevant. Resources: 30 min/day, free. Founder Welcome Email (#47) — Every signup gets a personal email from you asking one question: "What made you sign up?" Builds relationships and surfaces messaging gold. Start: Write a 5-line plain-text email, set it to send 10 minutes after signup. Resources: 1 hr to set up, nearly free.