My girlfriend never grew up with Star Wars and only saw them for the first time a few years ago. We recently rewatched them together. She now enjoys them but she's not super into them like I've been since childhood. So as a relatively new fan, here are some of her thoughts:
Watch it in release order. This means if you watched all of them, you watch 4, 5, 6, 1, 2, 3.
(4, 5 and 6 were made in the 70s/80s. 1, 2 and 3 are prequels made around the 2000s. 4 originally didn't have a number attached when it was first released (it was just called Star Wars), but the guy who made them put it in at a later time because someday he wanted to make prequels. )
The prequels have some really cool design sometimes but overall are not very good. Treat them as optional, she doesnt care to rewatch them. 4, 5, and 6 are the ones you need to see (especially for the new movie, Abrams repeats that his focus is the original trilogy). Episode 3 is the best of the prequels if you want to be choosy.
She doesn't care about the changes in 4 and 5. However when it comes to 6 (Return of the Jedi), I recently showed her the original version (Harmy Despecialized). She says that the original is way better. Particularly she hated the new dance scene, and she liked the original Vader at the end. She saw the bluray first and the original second and came to this conclusion. Watch the blurays of 4 and 5 if youd like, but go out of your way to get a copy of the original Episode 6.
As previously mentioned, there is a fan version of Episode 6 that uses various sources (including the bluray) to restore the movie to its original form. It is called Harmy's Despecialized Edition.
