SEO Basics guides.
Every seo basics guide we've published — 106 articles on the tactics, the tradeoffs, and what actually moves rankings.
What Is a Backlink Profile? (And What a Healthy One Looks Like)
A backlink profile is every link pointing at your site. Learn the five parts that make one look healthy, the red flags, and how to read yours for free.
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What Is Off-Page SEO? What Counts, Examples and Why It Matters
Off-page SEO is everything outside your site that affects rankings: backlinks, brand mentions, reviews and PR. What counts, real examples, and what doesn't.
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On-Page vs Off-Page SEO: The Difference and Which Comes First
On-page vs off-page SEO: what each covers, a side-by-side table, how they work together, and which to focus on first for a new site or an established one.
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How to Write Anchor Text: Rules, Examples and Mistakes
How to write anchor text that helps readers and SEO: Google's own rules, good and bad examples, length, and what anchor to ask for when you earn a backlink.
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Internal vs External Links: What's the Difference for SEO?
Internal vs external links explained: what each one is, what each does for SEO, when to use nofollow or sponsored, and how backlinks fit in, with examples.
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What Is Grey Hat SEO? Link Tactics and Their Risk
What does grey hat SEO mean? See which link tactics sit in the grey zone (PBNs, paid links, swaps), what Google's spam policy says and how to judge the risk.
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How Does Google Evaluate Backlinks? Signals That Count
How does Google evaluate backlinks? See the signals that decide whether a link counts: relevance, source quality, placement, anchor text and spam checks.
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What Is Domain Rating (DR)? How Ahrefs Scores It
Domain Rating is an Ahrefs score from 0 to 100 for a site's backlink strength. See how DR is calculated, what counts as good, and what it can't tell you.
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What Is a Broken Link in SEO? Do They Hurt Rankings?
A broken link points to a page that no longer loads. Learn whether broken links hurt SEO, how Google treats 404s, and how to find and fix dead links on your site.
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Do Nofollow Links Help SEO? What They Still Do
Do nofollow links help SEO? Google says they are generally not followed, but they still bring traffic, discovery and a natural link profile. What to expect.
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How Is Domain Authority Calculated? (What Goes In)
How is domain authority calculated? Moz scores sites 1 to 100 with a neural network fed by linking domains, link strength and spam signals. Why it drops.
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Does Domain Authority Still Matter in 2026?
Domain Authority still matters as a benchmark, not a ranking factor. What Google has said about DA, what the score is good for, and what to track instead.
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