How do I start with GEO and what matters most?

Start with a technical audit of the website, focused on structured data and readability for AI. Then create content that is comprehensible not only to people but also to generative models — use clear definitions, citations and relevant data. Do not forget to build content outside your own website either (PR articles, external blogs, forums), and keep monitoring the development of AI algorithms so that your content remains visible in the long term.