you can install linux with xp installed. Linux isnt the best user friendly because you need some command line "
brotherhood" experience. But the friendliness is getting better with the development of KDE and GNOME (2 desktops you can use; examples) The best place to start is get an older pc for around 40 bucks that can run the GUI and get a book that helps you with commands and how to use it.
Obviously the best thing to do is crash it a few times to understand it and also... RTHT

(Read the How To's)