Internal links are links from one page of your site to another. Many focus on backlinks (external links), but internal links are also extremely important for SEO — and you control them completely.
Why it matters
1) Google discovers and indexes your pages. 2) "Link juice" (page authority) is distributed between pages. 3) Users stay longer on the site (lower bounce). 4) Google understands page topics — which page relates to what.
Anchor text matters
The link text (anchor) should be clear. "Click here" — bad. "Domain selection guide" — good. Google uses the anchor to understand what the linked page is about. But don't repeat the same anchor everywhere.
Topical cluster
The most powerful strategy. One broad "pillar" page (e.g. "Complete domain guide") and many narrow pages ("Choosing a domain", "Domain transfer", "Domain price"). All link to each other. Google treats this cluster as a topic authority.
Depth
Every page should be no more than 3 clicks from the homepage. If a page is 5-6 clicks deep, Google considers it "unimportant" and indexes it poorly.
Contextual links
The most valuable are natural in-text links. A link to a relevant article in the middle of the text. Google values these above footer or sidebar links because they fit the context.
The orphan page problem
An "orphan page" has no links pointing to it. Google struggles to find it. Use GSC or Screaming Frog to find orphan pages and add links to them.
When to nofollow?
For pages like login, cart, admin — rel="nofollow". But don't nofollow ordinary internal links — you'd take authority away from yourself.
Breadcrumb navigation
Navigation like "Home › Domains › .uz domain" provides automatic internal links. With Schema.org BreadcrumbList markup it also shows in search results.
Sayt.uz practice
Sayt.uz blog posts link to each other: the SSL post links to "choosing a domain". Each post ends with a "Continue reading" section linking to relevant posts.