Placement matters more than quantity.
EFFECTIVE PLACEMENTS
Within the flow of a tutorial, at the point the reader needs hosting In a resources or recommended tools page In the description of a video that covers building a site In an email to subscribers who asked for this kind of advice In a proposal to a client you are recommending hosting to
INEFFECTIVE PLACEMENTS
Sidebar banners, which readers have learned to ignore Footers Pages unrelated to websites or hosting Anywhere the reader has no reason to need hosting at that moment
HOW MANY
One or two well-placed links in an article outperform a dozen scattered through it. Excessive linking reads as advertising and reduces trust.
PROHIBITED PLACEMENTS
Comment sections on other people's sites Forums where promotion is not allowed Unsolicited messages Anywhere the programme terms exclude
TESTING
Click your own link in a private browsing window periodically to confirm it still works. A broken or truncated link in a popular article costs referrals silently.