HowToCodePage

SEO Basics

Helping search engines understand and index you.

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This course has 3 lessons. Start with the first one and use the next / previous links at the bottom of each lesson — the sidebar keeps the whole course in order.

Lessons

  1. How search engines crawl and indexThe three-stage pipeline - crawl, index, serve - and the controls that decide whether a page enters it at all.
  2. On-page essentialsTitles, descriptions, heading structure, internal links and structured data - the parts of a page a crawler actually reads.
  3. Technical SEO and measuring itCanonicals, redirects, Core Web Vitals and the Search Console reports that tell you what is actually broken.

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Last refreshed 2026-09-17.