Alex Edwards is a UK-based software engineer and the author of Let's Go! and Let's Go Further — two of the most widely-recommended self-published books on building production web applications with Go using only the standard library and a minimal dependency footprint.
His CourseFlix listing carries Let's Go! Learn to Build Professional Web Applications With Go. The book / course is unusual for the depth it goes into the standard-library net/http patterns and the production concerns — security, deployment, observability — that most Go web tutorials skip in favour of framework-of-the-week content.
Material is paid and aimed at Go developers building production web services on the standard library rather than depending on heavy frameworks. For broader content, see CourseFlix's Golang category page.