SEO knowledge hub

Curated free (and a few selectively-paid) courses worth your time. Where a free certificate is on offer it's called out — those go on LinkedIn and resumes immediately. Green = free cert. Amber = paid cert / free coursework. Grey = no cert, but worth reading anyway.

SEO — fundamentals through advanced

• Google Search Central — Documentation + tutorials

  Google · Self-paced

  No cert

  The actual source of truth from Google: ranking docs, technical SEO guidelines, structured-data spec. Bookmark over anything else.

• Fundamentals of Digital Marketing

  Google (Digital Garage) · ~40 hours

  Free cert

  Free certified course covering SEO basics, content marketing, analytics, ads, and social. Accredited by IAB Europe + Open University.

• SEO Certification Course

  HubSpot Academy · ~6 hours

  Free cert

  Free certificate. Solid intro for non-technical marketers — keyword research, on-page, link building, technical SEO basics.

• SEO Toolkit Course

  Semrush Academy · ~3 hours

  Free cert

  Free Semrush-issued cert. Practical — focused on how to use SEO tooling to audit + research, even if you don't pay for Semrush.

• Become an SEO Specialist (LinkedIn Learning Path)

  LinkedIn Learning · ~15 hours

  Paid cert

  Free with LinkedIn Premium / first-month trial. Adds the LinkedIn profile badge — useful for freelancers + agency talent.

• Yoast SEO Academy

  Yoast · Varies

  Paid cert

  Some free (SEO for Beginners), most paid. Excellent if you work on WordPress sites — covers Yoast plugin internals + technical WordPress SEO.

• Coursera SEO Specialization (UC Davis)

  Coursera × UC Davis · ~5 months

  Paid cert

  University-backed certificate, audit-for-free option. Comprehensive but slower-paced — good for resume value.

• Ahrefs Blog + YouTube

  Ahrefs · Self-paced

  No cert

  Not a course but the highest-quality free SEO content on the internet — original research, real experiments, no fluff. The blog + their YouTube channel together rival any paid program.

• Moz SEO Learning Center + Whiteboard Friday

  Moz · Self-paced

  No cert

  The original SEO education resource. Whiteboard Friday videos are still the best way to learn a new SEO concept fast.

Paid ads — Google Ads, Meta, LinkedIn, TikTok

• Google Ads Skillshop (full certification paths)

  Google Skillshop · ~5-10 hours per cert

  Free cert

  The official Google Ads certifications: Search, Display, Video, Shopping, App, Measurement, AI-Powered Performance Ads. Free, valid 12 months. Required for any agency that wants Google Partner status.

• Google Analytics 4 Certification

  Google Skillshop · ~4 hours

  Free cert

  Free official GA4 cert. Critical if you're going to report on ad performance — most agencies still don't have someone who actually knows GA4.

• Meta Blueprint Certification

  Meta · Varies per cert

  Paid cert

  Meta's official Facebook + Instagram ad certifications. Exam is paid ($99-$150) but all the prep coursework is free. Look for: Media Buying Professional, Media Planning Professional.

• Meta Blueprint Free Courses

  Meta · Self-paced

  No cert

  The course library itself is fully free — Meta only charges for the exam. Hundreds of modules on ad creation, targeting, Pixel + CAPI, Advantage+ campaigns.

• LinkedIn Marketing Labs

  LinkedIn · ~5-10 hours per cert

  Free cert

  Free LinkedIn-issued certs: Marketing Strategy, Content Marketing, Marketing Analytics. The 'Marketing Strategy Certified' badge is rare on LinkedIn — meaningful trust signal.

• TikTok Academy (formerly Skillshop)

  TikTok · Varies

  Free cert

  Free TikTok-issued cert. Covers Spark Ads, TikTok Shop, creative best-practices. Essential if you'll touch e-commerce + Gen Z audiences.

• Microsoft Advertising Certified Professional

  Microsoft Advertising · ~8 hours

  Free cert

  Free Bing Ads / Microsoft Ads cert. Lower-traffic platform but cheaper CPCs + 7% search market share is meaningful at scale.

• Coursera Google Digital Marketing & E-commerce Certificate

  Coursera × Google · ~6 months

  Paid cert

  Google-issued professional certificate. ~$50/mo on Coursera, financial aid available. Covers SEO, SEM, social, email, ecom analytics. Resume-grade.

Analytics, tracking, conversion optimization

• Google Tag Manager Fundamentals

  Google Skillshop · ~3 hours

  Free cert

  Free official cert. Almost every ad tracking issue I see traces back to bad GTM implementation — this saves you debugging time later.

• Looker Studio (Data Studio) Tutorial Series

  Google · Self-paced

  No cert

  Free official tutorials for building client-facing dashboards. Looker Studio is the cheapest way to look professional in monthly reports.

• CXL Conversion Optimization Mini-Degree (free preview)

  CXL Institute · ~20 hours (free preview)

  Paid cert

  Most rigorous CRO curriculum available. Paid program is expensive (~$300/mo) but the free preview lessons are some of the best CRO content online.

The smart sequence for someone starting fresh

1. Week 1-2: Google Fundamentals of Digital Marketing (broad foundation) + Google Search Central docs (skim every section)
2. Week 3: HubSpot SEO Certification — fastest to a credential
3. Week 4: Google Ads Search Certification — the single most marketable cert in this list
4. Week 5:Google Analytics 4 Certification — every agency client's data flows through GA4; nothing else works without it
5. Ongoing: Ahrefs blog + Moz Whiteboard Friday + subscribe to Search Engine Land newsletter. The certs stop teaching new things after a few months; the blogs never do.

💡 All certifications expire 12-24 months after issue. Set a calendar reminder to retake — the questions change as the platforms evolve and an expired cert is worse than no cert (it signals you stopped learning).

Google has 200+ ranking signals, but a small subset accounts for almost all of the movement. Stop optimizing for the long tail of folklore — focus on these:

The dominant signals (2026)

• Helpful, people-first content — the Helpful Content system is now baked into core. Sites with a high ratio of generic-AI-feel pages get suppressed sitewide. Audit ratio, not just single pages.
• Quality & quantity of relevant inbound links— links from topically aligned, high-authority sources. One link from NYTimes > 100 from random blogs.
• E-E-A-T signals — Experience first (real-world usage), then Expertise, Authority, Trust. Critical for YMYL queries (your-money-your-life: health, finance, legal).
• Search intent match — does your page answer the query in the format searchers expect (list / how-to / comparison / definition)? Mismatch loses every time, however good the content.
• Topical authority — how comprehensively your site covers the topic cluster, not just the one page.
• Page experience — Core Web Vitals (LCP, INP, CLS), mobile-friendliness, HTTPS, no intrusive interstitials.
• Freshness— for queries that demand it (news, comparison, "best X"). Last-updated date matters.
• Internal linking & site structure — clean hierarchy, descriptive anchor text, no orphan pages.
• Structured data — eligibility for rich results (FAQ, How-to, Article, Product, Recipe, etc.).

What barely matters (or is folklore)

• Keyword density / TF-IDF tuning to a percentage
• Exact-match keywords in URL slugs
• Meta keywords tag
• Word count by itself (without depth)
• One-H1-only rule
• Domain age
• Bounce rate (Google has confirmed they don't use it directly)

Topical authority is why Backlinko ranks for nearly every SEO query, Yoast for every WordPress-SEO query, Healthline for every symptom. They've covered the topic so completely that Google trusts them as the authoritative source.

The hub-and-spoke model

• Pillar / hub page— definitive guide on the broad topic (e.g. "Link building"). 3,000-8,000 words, links to all spoke pages, ranks for the head term.
• Spoke pages — each covers one specific subtopic (broken link building, HARO, digital PR, guest posting). 800-2,500 words each. Each spoke links back to the hub and laterally to related spokes.
• Coverage targets— to claim authority on a topic cluster, plan ~15-30 pages per major cluster. The pillar alone isn't enough.

How to plan a cluster (the Backlinko / Ahrefs blog way)

1. Pick the head topic. Find its parent (broader) and sibling topics.
2. Mine People-Also-Ask, Reddit, Quora, YouTube comments for the actual questions people ask. Each becomes a spoke candidate.
3. Audit the SERP: what's ranking? If listicles dominate top 3, your spoke is a listicle. Don't fight the intent.
4. Build the cluster as ONE batch over 4-8 weeks. Half-built clusters underperform — the internal linking only kicks in once the cluster is dense.
5. Link the cluster: hub → all spokes, spokes → hub, spokes ↔ peer spokes where relevant. Use descriptive anchor text, not "click here".
6. Update the hub every 60-90 days. Re-pulse internal links if you shift navigation. Google rewards demonstrably maintained clusters.

Why "publish 1 post a week forever" fails

Single posts on unrelated topics never compound. Publishing 30 random posts is worse than publishing 30 in one tightly-themed cluster — the latter unlocks a topical authority boost the former never gets.

"We don't need a blog, we're a serious business" loses you organic traffic forever. The reason it matters is mechanical, not marketing-fluff:

• Most informational queries don't map to product/service pages.Without blog content, you can't rank for the 90% of searches that begin with "how", "what", "why", "best", "vs". Your competitors who do blog will own all of those.
• Internal links to product pages depend on blog content. Without articles to host them, your money pages have weak link equity from inside the site.
• Topical authority requires breadth.A 6-page service site can't demonstrate authority. A 60-page site with a tight cluster around your service category can.
• Backlink magnets live in blog content, not product pages. People link to data studies, original research, "ultimate guides" — not to your /pricing page.
• Trust signals. A blog with author bylines, dates, and citations is the cheapest way to demonstrate E-E-A-T.
• Knowledge graph eligibility.Your About + a consistent blog-author footprint is what gets you into Google's entity graph.

The 12 rules — same ones the top SEO blogs follow

1. One topic per post. If a post needs 3 H2 sections on unrelated subjects, split it into 3 posts.
2. Match SERP intent before drafting.Look at top 5. If they're all listicles, write a listicle. Format mismatch loses 100% of the time.
3. Open with the answer, not the throat-clearing. The first 100 words must give the visitor a reason to stay.
4. One author. Real bio. Real bylines."Posted by Admin" eliminates E-E-A-T signal entirely.
5. Published date AND last-updated date. Visible to users. In schema. Update old posts and bump the date when content materially changes.
6. Outbound citations to authoritative sources.3+ per post. Don't worry about "leaking link juice" — Google rewards well-cited content.
7. 3-5 internal links per post. Descriptive anchor text. Cross-link old + new posts both directions.
8. Original images / charts / screenshots. Stock photos add nothing. A custom diagram or annotated screenshot earns links and image-search traffic.
9. Schema markup matched to content.Article + Author for posts. FAQ schema only for posts with genuine Q&A. How-To schema for actual procedural content. Don't fake it.
10. Featured snippet shape on at least one section. One H2 phrased as the question, paragraph 40-60 words directly answering it. Picks up the snippet ~30% of the time.
11. Update before you publish-new. A 12-month-old post brought up to date often outperforms a new post. Refresh decay candidates first.
12. One CTA per post. Either capture email, drive to a service page, or push a tool. Three CTAs = zero conversions.

Length guidance — directional, not a target

• How-to / tutorial: 1,200-2,200 words
• Listicle (top 10 / best X): 1,800-3,500 words
• Ultimate guide (pillar): 3,000-8,000 words
• Comparison (X vs Y): 1,500-2,500 words
• Definition / quick answer: 400-900 words
• Case study / data study: 1,500-3,000 words + a chart

Weekly cadence (sustainable for a 1-2 person team)

• Mon — publish 1 new post or refresh 1 old post
• Tue— internal-link audit on last week's post + 5 contextual links from older posts
• Wed — 1 GBP post (offer / event / update / product / story — rotate types)
• Thu — outreach / link building (HARO replies, broken link pitches)
• Fri — review GSC: any drops? 1-2 quick-win striking-distance keyword fixes
• Daily — reply to every GBP review within 24h. 5+ star with name + specific detail; 1-3 star with empathy + offline fix.

GBP posts — what works

• 1 post per week minimum. 2-3 if you can sustain it. Posts decay in the GBP feed but the activity signal helps local pack visibility.
• Hook in the first 12 words. GBP truncates after that on mobile.
• Include 1 image (1200×900 or larger). Posts with images get ~2× the clicks of text-only.
• Always a CTA button — Book, Order, Call, Learn more, Sign up. Match your business action.
• Mix types over the week. All-offers feels spammy; vary updates/stories/products.

Why daily / consistent matters more than "the perfect post"

Google's freshness signals + GBP's activity signals reward cadence. A site that publishes a decent post every week for 2 years outperforms a site that publishes a brilliant post quarterly.

Generic page-speed advice is useless because the bottleneck is different on every stack. Here's the playbook by what you're actually running:

WordPress

1. Caching plugin — WP Rocket (paid, best), LiteSpeed Cache (free, requires LiteSpeed server), W3 Total Cache (free, complex). Without one, every page is regenerated per request.
2. Audit plugins— every active plugin loads JS/CSS. Aim for <15 active. Use Query Monitor to see which fire on every page. Replace bloat (Elementor → block-themes) where possible.
3. Image optimization — ShortPixel / Smush / EWWW plugin. Convert to WebP. Lazy-load below the fold.
4. Cloudflare in front — free tier, drops latency everywhere. Enable Auto Minify, Brotli, Polish (Lossy).
5. Hosting matters — shared hosting (Bluehost, GoDaddy) caps you at TTFB ~600ms+. Move to Kinsta / Cloudways / Hetzner if speed matters.

Shopify

1. App audit — every app injects scripts. Audit in Settings → Apps. Remove abandoned ones. Each one usually adds 200-800ms.
2. Theme — use Dawn or a fast paid theme. Old Sectioned themes (Debut) are slow. Page builders (Shogun, PageFly) are slow.
3. Image compression— <100 KB per product image. Shopify renders WebP automatically; just keep source files lean.
4. Lazy-load with Liquid — change img_url to image_tag with loading: "lazy".
5. Defer 3rd-party scripts — analytics, chat, reviews. Load them after page render.

Next.js

1. next/image with priority on the LCP image. Set width/height to prevent layout shift.
2. next/font for self-hosted fonts. Eliminates the render-blocking external font request.
3. next/script with strategy="afterInteractive" for analytics, chat, GTM.
4. Dynamic imports for client-only components below the fold. Cuts initial bundle.
5. ISR or static renderingfor content that doesn't need request-time data. revalidate: 3600 on blog posts.
6. Edge runtime for the parts that can use it. Cuts TTFB from ~300ms to ~30ms in many regions.

Wix / Squarespace

Limited control. The honest list of what you CAN do:

• Compress images before upload (≤200KB per hero, ≤80KB per gallery)
• Disable apps you're not actively using (each one adds load time)
• Reduce custom code in <head> — every embed costs you
• Pick a fast template — newer templates are usually 30-50% faster
• Be honest with the client: Wix/SquareSpace will never beat Shopify/Next.js on speed. Compete on content + conversion instead.

LCP (Largest Contentful Paint) is the single Core Web Vital that moves rankings most often, because most sites fail it on mobile. Target: <2.5s on 75th percentile mobile users.

The 5 LCP fixes that move the needle (in order)

1. Identify the LCP element— open Lighthouse, the report shows it. 90% of the time it's the hero image, hero text block, or a hero video poster.
2. Preload it — <link rel="preload" as="image" href="hero.webp" fetchpriority="high">. On Next.js, add priority prop to the image.
3. Compress + serve modern format— WebP or AVIF. Hero images should be <100KB even on retina.
4. Eliminate render-blocking resources — defer non-critical CSS, async load JS, push web fonts to swap or use font-display:optional.
5. Reduce TTFB— caching, CDN, faster hosting. TTFB above 600ms makes <2.5s LCP almost impossible.

PageSpeed score quick wins (boosts 60→85+)

• Resize hero images to actual displayed dimensions
• Lazy-load every image below the fold
• Defer or async every <script> tag
• Inline critical CSS (above-the-fold) in <head>
• Move analytics to afterInteractive
• Self-host Google Fonts (or use system fonts)
• Eliminate render-blocking 3rd-party widgets (chat, social buttons)
• Add width and height to every image to eliminate CLS

By server / hosting

• Apache shared hosting — enable mod_pagespeed if available, gzip + brotli, force HTTPS, mod_expires for static cache headers.
• Nginx — fastcgi cache for WordPress (TTFB drops to ~50ms), gzip + brotli, http2_push for critical CSS, proxy_cache for API responses.
• Cloudflare in front of anything — free, drops TTFB globally, Auto Minify + Brotli + Cache Reserve. Single biggest ROI optimization.
• Vercel / Netlify — already at the edge. LCP tuning becomes purely about asset weight + render path.

Local pack ranking is largely driven by GBP signals — even more than on-site SEO for "[service] near me" type queries.

Profile completeness (do once, properly)

• Business name — exactmatch to signage and legal/DBA. Don't keyword-stuff ("Smith Plumbing - 24/7 Emergency Plumbers") — Google demotes for it.
• Primary category — pick the most specific that fits. Add 3-5 secondary categories.
• NAP — name / address / phone — must match website + every directory citation exactly.
• Hours — including holidays. Update 7 days before holiday closures.
• Service area — only set if you don't serve from a public address.
• Website link — to a relevant landing page, not always the homepage. For a multi-location business, link to the location page.
• Booking link — if you take appointments. Direct, not via Reserve with Google.
• Products / Services — add every one. Each becomes a sub-listing Google can index.
• Attributes — accessibility, payments, identity-owned (women-owned, black-owned, etc.) — these surface filters.
• Photos — 10+ upload, mixed: exterior, interior, team, products, customers (with permission).

Reviews — the biggest local ranking lever

• Goal: 50+ reviews, 4.5+ avg, 1+ new review per week sustained.
• Ask every customer at the moment of peak satisfaction — the day of service, not weeks later.
• Use a short link (g.page/r/<id>) on receipts, in email signatures, on the "thanks" screen after checkout.
• Reply to every review within 24h. Yes, even the 5-star ones — Google reads the dialog.
• Negative reviews: empathy + offer to make it right offline. Never argue. Never expose customer details.
• Use review keywords naturally in your replies — they're indexed for the listing.

Posts — weekly minimum

• Post 1-3× per week. Mix offers, events, updates, products, stories.
• 1200×900 image minimum. Google penalizes blurry posts.
• Hook in the first 12 words. Always end with a CTA button.
• Local detail: name the city / neighbourhood / a known landmark.

Citations & consistency

• Top tier: Apple Business Connect, Bing Places, Yelp, Facebook, Foursquare, BBB.
• Niche citations matter more than 100 random directories. A dental practice on Healthgrades + ZocDoc beats 50 generic listings.
• NAP consistency to the punctuation. "Suite 100" vs "Ste. 100" vs "#100" should all be normalized.

Q&A

Many businesses ignore this. Seed your own most-asked questions with good answers — they're indexed and sometimes pulled into the knowledge panel.

Google's knowledge graph is its database of entities (people, businesses, places, things). Getting your business / brand / authors recognized as entities unlocks the knowledge panel, brand SERP, and better citation rates in AI Overviews + LLM answers.

How to earn knowledge-graph entity status

1. Wikidata entry — the cheapest, most direct signal. Create one with notable references (news mentions, books, academic citations, official site).
2. Wikipedia article— only if you meet notability thresholds. Don't game it; admins delete promotional pages.
3. Organization / Person schema with sameAs — link your home page to LinkedIn, Twitter/X, Crunchbase, Wikidata, Wikipedia. Google reads sameAs as identity-graph evidence.
4. Consistent name everywhere — same legal name, same brand spelling, same logo across all platforms. Inconsistency fragments the entity.
5. Authoritative mentions — news pieces, podcast appearances, conference speaker pages, GitHub bio. These build the entity association even without links.
6. Author profiles per writer — every blog author gets a /author/<slug> page with bio, photo, social profiles, full author Person schema, and a list of their published articles.

Brand SERP optimization

• Search your brand name. The first SERP is your reputation.
• Make sure you control the top 5 results: home, key category, About, LinkedIn, Twitter.
• Sitelinks are auto-generated by Google. Help Google by having a clean information architecture and keyword-distinct page titles.

After Google's 2023-2025 cleanups, many schema types stopped producing visible rich results. Here's what actually shows up in SERPs today and what's worth implementing:

Still produces rich results

• Article / NewsArticle — top stories, byline + date enrichment.
• Product — price, availability, ratings (only with real review aggregator data, not self-attestation).
• Recipe — full carousel, cooking time, calories, rating.
• Event — date, location, tickets.
• FAQ — only on government and authoritative health sites now (rolled back for everyone else in 2023).
• How-to — only on desktop, only for genuinely procedural content.
• Breadcrumb — replaces ugly URL in result.
• Video — thumbnail + duration in SERP. Critical for video content.
• LocalBusiness — opening hours, address, phone in knowledge panel.
• Sitelinks Search Box — only for established sites with strong brand signal.
• Review (organization-level) — for service businesses, star rating in SERP if from third-party aggregator.

Stopped showing rich results (skip / deprioritize)

• FAQ on commercial pages (rolled back)
• How-to on mobile (rolled back)
• Self-claimed Review schema with no third-party source
• JobPosting (still works but Google for Jobs surface-only)

Implementation rules

• Schema must reflect what's actually visible on the page. Faking it gets a manual action.
• Use JSON-LD in <head>. Microdata is harder to maintain and mix-ups are common.
• Validate every page in Google's Rich Results Test before considering it shipped.
• One canonical entity per page — don't put 5 different schema objects representing the same thing.

Experience, Expertise, Authoritativeness, Trust. Critical for YMYL (your-money-your-life: health, finance, legal, news) — important everywhere else. The signals are visible, not vibes. Audit them:

Visible signals on every published page

• Author byline with link to /author/<slug> page
• Author bio directly below or beside the byline — credentials, years of experience, specialism
• Published date AND last-updated date visible to user
• Reviewer linefor YMYL: "Medically reviewed by Dr. X, [credential]" or "Fact-checked by [editor]"
• Outbound citations — 3+ to authoritative sources (.gov, .edu, peer-reviewed, primary sources). Linked, not just mentioned.
• Original imagery — your screenshot, your photo, your chart. Not stock.

Site-wide trust pages

• About — real people, real bios, real photos
• Editorial policy / methodology / standards page
• Contact — phone, email, physical address if applicable
• Privacy policy + terms — link from footer on every page
• Sources / disclosure — for affiliate sites, disclose. For AI-assisted content, consider disclosing.

Schema

• Person schema for authors with sameAs links to their profiles
• Organization schema on the home page with sameAs links
• Article schema with author + datePublished + dateModified on every post

Run the in-tool E-E-A-T audit (Tools → E-E-A-T audit) on any page to get a score and concrete fix list.