I guess plenty of people have said a lot of things about all the movie and TV references this series has and how it recreates the eighties in all their faults and splendor. I will not add to that.
With the release of the second season I'd simply like to advise that both seasons are very different animals. Think of it as the difference between the original Alien movie and the Aliens sequel: Whereas the first season was more about an unknown and unseen horror and the mystery behind the backstory, the second has more in-your-face action and horror laced with character development arcs which feel nice but sometimes sidetrack the series a bit.
Consequently, a fan of the show should probably watch the second season as a separate work of fiction rather than a true continuation of the first season in tone and spirit. The writers move the story forward and we get a very good piece of entertainment but the new season has to be judged on its own merits.
EDIT: Season 3 turned out to be a huge change in tone for the series. Maybe it's really hard keeping up the mystery if much of the "world" of Stranger Things already yielded many of its secrets but the overall "feel" of the series went into a different direction. Maybe the writers simply ran out of 80' templates to rip off. Season 1 was very much inspired by supernatural horror as in "Poltergeist". Season 2 took many cues from "Creature Features" like "Gremlins" or "Aliens". Season 3 now uses elements of 80' zombie flicks and low budget gore horror with a little bit of spy comedy mixed in (and fight scenes which feel straight out of "Die Hard"). All those genres didn't really mix well in the 80' and this strange cocktail sure doesn't work today. That doesn't mean that Season 3 is bad. It simply relies on characters who were established in previous seasons which used very different 80' story elements and tropes. It's almost like seeing Darth Vader in an Indiana Jones movie. Both work on their own but not together.
Basically, Season 3 is an all too transparent attempt to plough a fresh nostalgia field but it doesn't work in the context of previous seasons.
With the release of the second season I'd simply like to advise that both seasons are very different animals. Think of it as the difference between the original Alien movie and the Aliens sequel: Whereas the first season was more about an unknown and unseen horror and the mystery behind the backstory, the second has more in-your-face action and horror laced with character development arcs which feel nice but sometimes sidetrack the series a bit.
Consequently, a fan of the show should probably watch the second season as a separate work of fiction rather than a true continuation of the first season in tone and spirit. The writers move the story forward and we get a very good piece of entertainment but the new season has to be judged on its own merits.
EDIT: Season 3 turned out to be a huge change in tone for the series. Maybe it's really hard keeping up the mystery if much of the "world" of Stranger Things already yielded many of its secrets but the overall "feel" of the series went into a different direction. Maybe the writers simply ran out of 80' templates to rip off. Season 1 was very much inspired by supernatural horror as in "Poltergeist". Season 2 took many cues from "Creature Features" like "Gremlins" or "Aliens". Season 3 now uses elements of 80' zombie flicks and low budget gore horror with a little bit of spy comedy mixed in (and fight scenes which feel straight out of "Die Hard"). All those genres didn't really mix well in the 80' and this strange cocktail sure doesn't work today. That doesn't mean that Season 3 is bad. It simply relies on characters who were established in previous seasons which used very different 80' story elements and tropes. It's almost like seeing Darth Vader in an Indiana Jones movie. Both work on their own but not together.
Basically, Season 3 is an all too transparent attempt to plough a fresh nostalgia field but it doesn't work in the context of previous seasons.