My son inherited a Mac from his grandmother. I am not much of a computer person in the first place and I know nothing about Macs. He's been having some problems using Safari and I thought I should find out some basic questions about the computer. But where on the computer can I go to find out? I don't know what Mac OS or Mac 9 or any of those things mean. But I should find out all the basic information about the computer and the system so that when I am asked, or the specs matter for some reason (downloading a browser, etc.), I will have them to hand. How can I discover the most basic facts about my son's computer, hardware, software, etc, from the desktop?