All of the GITS creations are different continuations, they are not related except for some basic character templates. Hell even the first movie is not part of the original manga, but rather a shorten version of one the chapters of the manga.
Movie: Ghost in the shell, Ghost in the shell 2: Innocences are one continuation
TV: Ghost in the shell: SAC, SAC 2nd GiG, Solid State Society are also one continuation
Manga: Ghost in the shell, Ghost in the shell: Man Machine Interface are the original continuation
the novels:
"After a long good bye" is a prequel to Innoncences
"The lost memory", "white maze", "revenge of the cold machines" are side stories from the SAC universe.
and now this.