How to do keyword research, free and step-by-step

Keyword research is mapping the language your market uses to the pages you can build to serve it. Three things matter for every keyword: how many people search it (volume), how hard it is to rank for (difficulty), and what the searcher wants (intent). A perfect keyword is the overlap of decent volume, winnable difficulty, and intent that matches what you sell.

Most beginners obsess over volume and ignore the other two. A 50-searches-a-month phrase with buying intent you can actually rank for beats a 50,000-searches term you will never crack and that brings tyre-kickers anyway.

Start with the obvious terms a customer would type to find what you do, then expand them with free sources that show real searches:

• Google autocomplete: start typing your seed and note every suggestion.
• People Also Ask and Related searches on the results page: a goldmine of real questions.
• Google Search Console: the Performance report shows queries you already get impressions for, often easy wins you did not know about.
• Customer language: support emails, sales calls, reviews. People search the way they speak.

You do not need a paid subscription to start. Google Search Console (your own real data), Google Keyword Planner (free with an Ads account), Google Trends (direction and seasonality), and the autocomplete and "People Also Ask" boxes will take you a long way. Free tiers of the bigger tools add difficulty estimates.

Treat every volume and difficulty number as a rough guide, not gospel. They are modelled estimates, and they disagree with each other. Use them to rank options, not to make absolute decisions.

For each candidate keyword, search it and read the results. The current top ten tell you two things at once: the intent (what format Google rewards) and the realistic difficulty (if the first page is all high-authority brands, a new site will not crack it soon).

The intent buckets

• Informational ("how to…"): guides and articles.
• Commercial ("best…", "X vs Y"): comparisons and reviews.
• Transactional ("buy…", "[service] near me"): product, service, or local pages.

Build the page type that matches the intent, or you will not rank.

Modern SEO rewards topical authority, not isolated pages. Group your keywords into clusters: one broad "pillar" page for the main topic, surrounded by focused pages answering each sub-question, all internally linked. This signals to Google that you cover the topic comprehensively, and it lifts the whole cluster, not just one page.

Map keywords to clusters before you write anything. It stops you creating two thin pages that compete with each other (keyword cannibalisation), the most common self-inflicted SEO wound.

Finish with a simple sheet: keyword, intent, target page (new or existing), and priority. Prioritise the overlap of winnable difficulty and real buying intent first, those are your fastest path to traffic that converts. Publish, measure in Search Console, and double down on what moves.

If mapping a whole site is more than you want to take on, a free audit includes a prioritised keyword and content gap analysis you can act on immediately.