Courses aimed at getting me into specialized job roles. E.g. a course aimed at getting a job as a Financial Trading .NET developer. It would probably be an amalgamation of courses on .NET that are used in finances plus courses that teach financial markets etc.

Similarly: professional certifications that mean something. I.e. a certification for .NET that shows I really know my stuff but just something I memorized like the MCP style exams (that's how I remember them being 10 years ago).