Skip the blog for now. The entry barrier is too high. Start with content arbitrage on high-traffic platforms you don't own.
Find a product on Amazon with a clear problem (e.g, phone ring light for streaming). Go to TikTok or Instagram Reels, search for videos of people struggling with bad lighting. Use a free editor to clip their problem, then show a quick cut of the ring light solving it. Add the Amazon affiliate link in your bio. You're piggybacking on existing audience interest.
Another fast start, answer niche questions on Reddit or Quora. Don't be generic. Find threads like Best budget microphone for podcasting? Write a detailed comparison of 2-3 specific models, mentioning pros/cons. Include your affiliate links. This targets high-intent users already looking to buy. Build a reputation first with helpful answers, then monetize.
The key is to monetize existing intent, not build an audience from scratch. Once you have consistent sales, then consider a blog or site to capture that traffic directly.