What are the best free resources to learn OS X all the way to the advance level?

Discussion in 'macOS' started by oro79, Nov 11, 2010.

  1. oro79 macrumors newbie

    Joined:
    Nov 11, 2010
    #1
    What are the best free resources to learn OS X all the way to the advance level?
     
  2. tkermit macrumors 68030

    tkermit

    Joined:
    Feb 20, 2004
    #3
    At the advanced level, the MAC OS X Reference Library can be quite helpful, possibly even for non-programmers.

    Let's say, for example, you wanted to know how the system determines what programs can open which files:

    Launch Services Concepts
     

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