Wow, thanks Joe
Assuming you've got a CDROM and a windoze 98SE CD, you should only have to:
Ensure you've set your BIOS to boot from CD. To get into your BIOS to check you probably have to either Hold down F1 during bootup, or press delete during bootup. There are other ways, those 2 just seem to be the most common.
Once your BIOS is set to boot from CD, place the disc in your CDROM and restart your computer. From there, it's just following the steps to install windoze. It will automatically format your partitions for you, and remove all existence of linux by the end of the procedure.
As for a short list of things to study, I'd first think that a tutorial always a good choice:
However you will need linux to learn on. So I also suggest head over to:
(for English click the top link on the page that says this page is also available in english) and grab the knoppix iso:
(or any site listed on the mirror list at the above link)
And burn it. You can use knoppix to learn how to use linux, and not worry about installing anything to your hard drive. It's a linux distro that runs right from the CDROM. You just place it in the drive and it goes through everything for you, all the way into a Graphical environment for you to explore linux from.
Good Luck, and enjoy yourself!