Quote "GIMP comes with a built-in help system. Once you have started the program, press F1 for context-sensitive help. You may have to install the help pages from a separate package (gimp-help), depending on how your version of GIMP was packaged."
I can't seem to find a download either but it's on my system under C: \Program Files\GIMP-2.0\share\gimp\2.0\help\en\index.html
Does F1 work ?
I got mine packaged on a cover disk. I assume I installed Help from the cover disk. Check through a few see if it's on there.