Total Novice Seeks Enlightenment on UNIX (for PC)

[rdonnlly at vax1.tcd.ie]

I have just bought an HP QS 16MHz 42Mb 1.44Mb & 1.2Mb, 2Mb RAM.
Is this enough to run UNIX ? If so, what company makes a PC version?
If not, how much extra would I need? Also, is there a newsgroup for
total beginners in UNIX?  If it's not totally obvoius, I'm "fairly" 
new to unix.

Thanks in advance,

Rory Donnelly