For tech things I would say that just reading the documentation (or source if there isn&#x27;t any useful documentation) is preferable to any online courses.<p>On my first meaningfully paid job, first actually useful thing I did was that I went into corporate archives and found documentation for Oracle 7i and Microstation 95 which I was supposed to be using. Somehow nobody else there even thought of reading the docs. (the fact that I somehow automated myself away in this job is another thing)