I’ve been a Fedora Core user for years, but I might try this just for shits and giggles. It’s also an excellent example of a web-based, low-tech (i.e., just screen shots and intelligent instructions) tutorial.
This tutorial shows how you can set up a PCLinuxOS 2010 desktop (with KDE) that is a full-fledged replacement for a Windows desktop, i.e. that has all the software that people need to do the things they do on their Windows desktops. The advantages are clear: you get a secure system without DRM restrictions that works even on old hardware, and the best thing is: all software comes free of charge.