From films, TV series, and OVAs to novels, manga, and art books, join us for this exhaustive deep dive into everything Ghost in the Shell—and we mean everything.
I may be an outsider's perspective. I'd suggest starting with 1995 movie, then Stand Alone Complex S1. Then dive into the original manga and see how much it informed the latter two. From there you can pursue any route without issues.
My only point of disagreement with the article is I really like Man/Machine Interface. I know it's kind of messy and not as clear with the plot and themes as some other entries, but the visuals alone make it worthwhile for me, it's such a trip.
The collected manga (12 issues) set up the world and lore very well. Suggest you start there. Wasn't really a fan of mmi, but others have good things to say about it. I also like the thought shirou puts into his designs - get an art book.