Hi,
Well, you can get a working OS on one floppy, but you might want a little more than that. If you are looking for a compact install, I get my Debian distro in 400megs. And that includes the Gnome DE, Netscrap 4.75, and a good selection of software. The only trouble you might have as a newbie is the install. It is all text based and can be a bit confusing to a total newbie. But it can be managed if you do a bit of reading and pay attention to what you are doing during the install. Besides apt-get is so cool

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Hope this helps,
OOPS!