This article over at PCMechanic is one that everyone out there should at least glance over. I've seen so many people with terrible file managemnt habits (dumping everything to the desktop, for insance... so unbelievably cluttered) that I think the basic points of this article should be required reading when you first start learning to use a PC.

"This article is geared toward giving the reader a deeper and more in depth understanding about how to properly manage files and folders on their personal computer. In addition, this article will hopefully provide the reader with a better understanding of file hierarchy within Windows Operating Systems."