SEO means search engine optimization. It’s a marketing discipline that involves making small changes to your website so that search engines like Google can easily understand and recommend it to people who are looking for information related to what you offer.
SEO techniques include writing helpful and clear content that answers common questions, making sure your site is easy to use on any device, and earning trust by having other well-regarded sites link to yours. By doing these things, your website is more likely to appear higher in search results, bringing in visitors who are already interested in what you have to share.
You can start with simple steps—like choosing clear titles for your pages and writing about topics your audience cares about—for free and without any experience. As you learn more about SEO, you can build on these basics to help your site reach more people and grow.
Further reading: What Is SEO?