If you want to enjoy Ghost in the Shell

the most important thing you need to do is decide to watch it on its own merits and not compare it to the original anime movie (or subsequent films and series).  If you approach this live-action film as part of the Ghost in the Shell canon, then you'll probably be disappointed, in part because the emotional heart of this one is rather different than that of the anime offerings, and in part because the powers of Major are definitely not consistent with those she has in the anime pieces.

As always, I walked into the theater hoping to enjoy the movie, and I'm happy to say that I did.  Visually, it was gorgeous--not as pretty as the anime film, but for a live-action movie, quite lovely. The lead actors, notably Scarlett Johansson, Pilou Asbæk, and "Beat" Takeshi Kitano, turned in solid performances, with Kitano particularly fun in his role as the head of their agency.

If you don't know the anime predecessors, of course, then just go and have a good time.

Even if you do, I recommend the film, provided you can allow it to be its own thing.  It's far from a perfect movie, but it's beautiful to watch and does have a heart, something many action films lack.