Need Help (Identifying) Korean Stamps

Hi everyone,

I think I'm going to join your group for a while. I have a stamp
collection of many thousands (of stamps), and I need some help with
some history and countries and stuff that I haven't learnt (or am not
old enough to know or remember).

Right now, I need to know about North and South Korea. Is there an easy
way to tell which stamps are from North, and which are from South? I
don't own a Scott catalog for these countries... I only have Vol 1 and
3 from 1998, but that only helps with A-B and G-I. I'm hoping some of
you more experienced collectors can explain some things so I can sort
the rest of these stamps out.

Thanks,
Sapphyre