Hello, I'm thinking of upgrading 1 or 2 versions above this 10.8.5. I don't think I'll upgrade to the latest version of OSX until I leave. I basically want to create a 2nd login user account on my imac? Or if this app security measure that creates private security from opening up besides me? Also is it possible to delete the user login account when I'm done so that hard drive space reverts back to original form. I basically want to install heavy duty apps mainly adobe, Video editing, sound editing, and More (not video games). Any web links or videos how to are welcome or comments down below. This imac has enough ram to handle the work for me, thank you everyone.