Nice to see I'm not the only new one around here. :-P
I'm used to making maps for Halflife - Counterstrike with the WorldCraft editor. I also can't wait to make maps for JKII and since the map editor for the game hasn't been released yet
I started working with the GtkRadient editor wich is very similar to
the WorldCraft editor. I've allmost finished a map with it already so it's not that hard to handle.
I also think that the JKII editor will not be that different from the GtkRadient editor so you'd not be wasting your time learning GtkRadient. After all... I believe JKII was created with a Q3Radient version... so I read. When we ask when the editor will be released... they say "soon :-)".
I remember the times when Shiny told there was going to be a patch for Sacrifice soon... They sayd that for about 6 months.
If I were you I would'nt wait to express my creativity until "soon" becomes "now". Start with GtkRadient... don't give up !! ;-)