What are some of the tools I should start out with if I wanted to get into JK stuff, before JKO comes out???
Well, if you want to make JK stuff first, go to
http://www.massassi.net)
Anyway, I have to warn you about this: editing for JK is very different from what will be editing for JO/Quake/Elite Force.
The only thing in common they have is that both are in 3D :D
My opinion is that if you want to know what feels to edit, try Quake 2 or 3, they're easier to start with.
Of course, it's just my opinion, do whatever pleases you most. Hey, what the heck! Try both :D :D :D!!!
Good luck with your editing!