Christoph Berger publishes the AppliedGo blog and YouTube channel — one of the longer-running independent sources of practical Go tutorials, focused on idiomatic patterns and small standalone programs that teach a concept end-to-end.
His CourseFlix listing carries Master Go — a comprehensive Go course aimed at developers picking up the language for back-end and systems work.
Material is paid and aimed at developers from other backgrounds adopting Go for production work. For a broader Go syllabus on CourseFlix, see the full Golang category page where this course sits alongside material from Bill Kennedy (Ardan Labs), ByteSizeGo, and the wider Go teaching community.