SEO from zero: the complete guide to search rankings

Published in September 2019 and revised in August 2026. The seven chapters and their order stand; the introduction and examples have been brought up to date with how search works now.

This guide came out of a specific frustration: almost everything written about search rankings is aimed at people who already understand search rankings. Someone running a business who wants to know why they are not showing up on Google finds either lists of tricks without context, or technical documentation that assumes exactly what they came to learn.

We are not claiming it is the most complete guide out there. It is the one we wish we had read at the start: seven chapters, in plain language, with no assumption that you can read a robots.txt. If you are after advanced technical material — rendering, crawl budget, log analysis — this is not your guide and better ones exist. If you want to understand what SEO actually is before hiring someone to do it, read on.

What changed since 2019, and what did not?

Worth saying up front, because it shapes how to read the chapters.

What changed: the result is no longer always a list of ten blue links. Google introduced AI-generated answers above the results, and a growing share of searches now ends without a click on anyone’s site. Speed and visual stability went from good practice to ranking signal with Core Web Vitals in 2021 — and one of them, the metric for responsiveness to interaction, was replaced by INP in March 2024. And sites that used to win with content written for the engine rather than for people have lost ground with every core update since.

What did not change: everything else. Understanding what a person is looking for and why, answering them better than anyone else, and keeping the site out of the way. That is what the seven chapters are about, which is why they still stand.

1 · The digital human: ten keys to understanding your customer

Before the search engine there is a person, and the person changed before the technology did. Research starts long before the purchase, hops between devices, gets interrupted and picked up hours later, and leans on what third parties say more than on what the brand says.

The chapter walks through those ten dynamics and their practical consequence: if your site is built for the person who has already decided to buy, you are missing the three or four searches that came before — which is where the decision actually happens.

→ Read chapter 1

2 · Access to information: how search engines changed the world

The genuinely new thing about a search engine was not the index — it was that we stopped memorising. Once you know you can retrieve a fact in two seconds, your brain stores where to find it instead of the fact itself.

The chapter introduces the three types of search — informational, transactional and navigational — that underpin any strategy, and audits the SEO statistics we quoted in 2019: which ones aged, which was a prediction that never came true, and which has been circulating for a decade with no source.

→ Read chapter 2

3 · How a search engine works

Crawl, index, rank. Three verbs that answer ninety per cent of the questions we get, including the most common one: “the page is published, so why doesn’t it show up?”

The chapter explains why the engine does not go walking the internet when you ask — it did that beforehand — and what you can do at each of the three stages. The aim is not to teach you to code, but to let you see what you are dealing with before you commit to a strategy.

→ Read chapter 3

4 · Experience tasters: how search engines have evolved

A 2005 search engine counted words. Today’s evaluates whether the page resolved what the person wanted. That shift — from text matching to judging the experience — is why nearly every ranking trick from fifteen years ago is now a penalty.

Understanding the direction of travel is worth more than memorising the latest algorithm update: every one of them has pushed the same way.

→ Read chapter 4

5 · Usability: the experience from your visitor’s side

User experience is not about the site being pretty. It is about the person finding what they came for without having to think: where am I, how do I go back, what does that button do, how much is left.

The chapter brings the concept down to concrete decisions — hierarchy, forms, navigation, load times — and to something that is easy to forget: a large share of your visits arrive on a phone, one-handed, in a hurry.

→ Read chapter 5

6 · Search intent: the key to keyword research

This is the chapter that most changes how readers work afterwards. Two people type the same words and want different things: one is comparing options, the other has already decided and wants to buy.

Ranking is about matching that intent, not the phrase. A sales page never wins an informational search, however well optimised it is — and that is where it becomes clear that content and SEO are not two separate disciplines.

→ Read chapter 6

7 · Backlinks: more than links, authority and reputation

A link from another site is someone staking their reputation on you. That is why it counts, and why bought links end up worth nothing, or less than nothing.

The chapter separates what you can build — content others cite, relationships, presence in directories that actually matter — from what is best avoided, and explains internal linking: the part you fully control and the part most often neglected.

→ Read chapter 7

How should you read it?

You do not need to read it end to end, or in order. If a chapter sounds familiar, skip it. What matters is having the seven ideas straight before deciding where to spend the effort, because almost every failed SEO budget we have seen went on the right tactic applied to the wrong intent.

Right then: go get a coffee, and let’s start.

Would you rather skip the theory and see what is holding your site back right now? Tell us what you have and we will take a look.