I am getting an iMac, have a HP i5 6GB all in one which I intend to install linux on. I need all the help I can get. I know nothing, zero, zilch about this operating system or how to set it up. Are there classes for beginners, how do I sign up. I will probably have the imac up and running middle/end of June at which time I will be ready to start using this computer as a linux platform.