Most SEO PDFs online fall into two camps: 300-slide decks full of jargon, or outdated notes that still talk about keyword density percentages.

This article is the written version of the notes we hand to new team members at Miaosupai — short, accurate, and organized in the order you actually need to learn things. Read it here, or download the PDF version at the end.

What These Search Engine and Optimization PDF Notes Cover

Good notes have a job: they help you revise fast and apply what you learned. That's the standard we held ourselves to here.

These notes are split into four blocks:

1. How search engines work — crawling, indexing, ranking

2. On-page optimization — what you control on each page

3. Technical SEO — what happens behind the scenes

4. Off-page authority — links, mentions, and trust

A fifth block — measurement — sits on top of all four. Notes without a measurement section are just trivia.

One note before we go further: no PDF replaces practice. We've trained junior staff who could recite every ranking factor and still couldn't fix a broken redirect chain. Use these notes to understand, then test on a real site. That's how the knowledge sticks.

How Search Engines Actually Work: Crawling, Indexing, Ranking

Every SEO note you'll ever read assumes you understand these three steps. So let's get them straight, in plain English.

Crawling and Indexing in Plain English

Crawling is discovery. Googlebot follows links and reads your robots.txt file to find pages.

Indexing is storage. Google analyzes the page and adds it to its index — the database it pulls search results from.

Here's the line to memorize: if a page isn't indexed, it cannot rank. Not "probably won't" — cannot.

Practical checks that belong in any set of SEO notes:

• Is your XML sitemap submitted in Google Search Console?

• Is robots.txt blocking anything important?

• Are canonical tags pointing to the right URL?

• How many pages are indexed versus how many you expect?

Google's own Search Essentials documentation covers this ground, and it's free to read. We recommend it to every client before we run a technical SEO audit.

How Google Decides Which Page Ranks

Ranking is a comparison, not a judgment of quality in isolation. Google looks at:

• Relevance — does the page match the query's intent?

• Authority — do other trusted sites reference it?

• Page experience — is it fast, mobile-friendly, and stable?

• Freshness — does the topic need recent information?

No single factor wins alone. Anyone who tells you otherwise is selling something.

Core SEO Notes: On-Page, Technical, and Off-Page

This is the section most students screenshot. Keep it bookmarked.

On-Page SEO Notes

On-page work is everything you control on a single page:

• Title tag — includes the main keyword, stays under 60 characters, reads like something a human would click

• Meta description — 120–155 characters, keyword included, written as a reason to click

• Heading hierarchy — one H1, H2s for major sections, H3s for sub-points

• Internal links — connect related pages using descriptive anchor text (more on this below)

• Image alt text — describe the image accurately; add keywords only when they genuinely fit

• URL structure — short and readable, like /seo-notes, not /2025/03/final-version-v2

A useful habit: after writing any page, ask "would this still make sense if I removed every keyword?" If yes, you're on-page optimized. If no, rewrite it.

Technical SEO Notes

Technical SEO is the infrastructure layer. It's less exciting, but it decides whether the rest of your work counts.

• Core Web Vitals — loading speed, interactivity, and visual stability

• Mobile-first indexing — Google evaluates your mobile version first

• HTTPS — non-negotiable

• Structured data — schema markup helps Google interpret content and can earn rich results

• Crawl efficiency — redirect chains and duplicate pages waste Google's crawl budget

We've seen sites with great content stuck on page four purely because a plugin was generating thousands of duplicate URLs. Technical fixes are unglamorous and often the highest-return work in SEO.

Off-Page and Link Notes

Off-page signals are about trust earned elsewhere:

• Relevance beats volume — ten links from industry sites outperform 500 directory listings

• Earned, not bought — Google's link spam policy is explicit about this

• Brand mentions count — unlinked mentions still build recognition

• Digital PR works — expert commentary in trade publications is one of the most durable tactics

For overseas stores, local citations and reviews matter too. A supplier with 40 genuine reviews converts better and earns more natural links.

Ranking Factors Worth Memorizing (And Myths to Ignore)

E-E-A-T and Helpful Content Notes

E-E-A-T stands for Experience, Expertise, Authoritativeness, and Trust. It comes from Google's Search Quality Rater Guidelines — and it's not a direct ranking score. It's a framework raters use to judge whether content is trustworthy.

What it means in practice:

• Experience — show you've done the thing, not just read about it

• Expertise — get technical details right

• Authoritativeness — be cited by others in your field

• Trust — real names, real contact info, no exaggerated claims

Google's helpful content guidance pushes in the same direction: write for people first, not for a keyword list.

SEO Myths You Can Delete From Your Notes

• ❌ "Keep keyword density between 1–2%" — there is no ideal percentage

• ❌ "The meta keywords tag matters" — Google has ignored it for years

• ❌ "Exact-match domains give you a boost" — mostly a 2010s myth

• ❌ "More pages always means more traffic" — thin pages dilute your site

• ❌ "Guaranteed #1 rankings" — nobody can promise this, and reputable SEO companies won't

Cleaning myths out of your notes is as valuable as adding new tactics.

How to Turn These Notes Into Real Practice

Notes you never apply evaporate in about two weeks. Here's a plan we've seen work.

A Simple 30-Day Practice Plan

• Week 1 — Audit: Open Google Search Console. Check index coverage, mobile usability, and sitemap status. Write down every issue.

• Week 2 — Fix: Repair the top ten problems. Prioritize anything blocking indexation, then page speed.

• Week 3 — Publish: Write one page answering a real customer question. Use the on-page notes above.

• Week 4 — Measure: Record organic sessions, indexed pages, and any inquiry or sale from organic traffic.

One home decor retailer we worked with had this exact issue: beautiful product pages, almost none indexed because of a canonical tag error. Two weeks of fixes, and their organic sessions climbed steadily for the next quarter. Another client, a small skincare brand, gained most of its early organic lead generation from internal linking alone — connecting blog posts to product pages with descriptive anchors.

That's the pattern. Small, correct, repeatable actions. If you'd rather have someone run the technical side while you learn, our [website audit service] exists for exactly that.

Conclusion: Download the Notes and Start Applying Them

These search engine and optimization pdf notes are meant to be used, not admired. Pick one section — crawling and indexing is the best starting point — and test it on your own site this week.

Then move to on-page basics. Then speed. Then links. Then measure.

If you want the full written notes in a clean PDF format, Miaosupai publishes them free on our blog. We also offer [technical SEO audits], [on-page optimization], and ongoing [organic growth support] for independent stores and B2B sites — no lock-in contracts, no exaggerated promises. Just the same framework in these notes, applied to your site.

Want the PDF version of these notes? [Download them here] — or [contact Miaosupai] and ask us anything about the material.

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