In the Beginning...

In the Beginning was the Command Line - Neal Stephenson

http://www.cryptonomicon.com/beginning.html

You have to get the article as a zipped text file. It is quite long but the analogies that he gives are quite funny, witty and amusing. I am yet to read the complete article. He explains some concepts using common idioms and examples. Many of them are not Universal e.g. cars related to US of A, Disney in Main Street US of A but you will get a hang of it. I suppose any one who is remotely amused and interested in history of computers would find the article engaging.