Strange that the MAC version is any different than the Windows version, I don't see the difference.  And to be perfectly honest, I believe that you will benefit from video examples rather than drawn-out text tutorials with limited illustrations.  There are dozens of tutorial-like threads throughout the forum, some are obsolete, and others are lost deep in the archives.  Your best option is to open the Poser Manual, either through the software or Posersoftware.com for the web-based edition, and seriously peruse the chapters.  There is quite a lot of material to cover and the manual is extensive.  Otherwise, you can post a thread in the forum for specific help and information.  Consider that learning everything about Poser 12 will take time and devotion as well as experimentation.  

Take a quick look through the forum at the different topics covered and see if those threads help you make sense of the software.