I tried to google search the mod pages but haven't found a mod to help organize my creations.
Is there such a mod? I'm thinking along the lines of adding folders to the way my creations are listed when i want to "load plane"--in game I get a long alphabetical list and I think it would be easier to keep stuff organized if I could make folders to subdivide that long list.
Alternately, is there a page or post or something to help me learn how to make mods so I could try to do this myself?

Thanks!
Rob