Yep. I managed to go in knowing relatively little. Knew a couple names, but no details of the story. Sort of considered it to be DnD: the movie.

For example, I didn't know men were part of it at all. I assumed it was elves and hobbits and wizards and that's it. I've never connected with 'one does not simply' memes over the years. I recognized Sean Bean, but never looked into what the origin was.

Funnily enough, I'd heard about Smaug, the dragon in the mountain, but I didn't know he was responsible for killing Gandalf. It surprised me when (a) he didn't speak, and (b) he got so little screen time relative to what I'd expected. It wasn't until I rewatched the films and realised no one called it a dragon nor by name that I figured out the balrog ≠ Smaug.

It definitely surprised me how good the films were, even how good they looked given their age. A great story, and despite the length, I'm sure there's been a lot cut from the books. I have a document of notes I made during a rewatch. I'm sure the books have answers to the dozens of questions I have from watching the films. Hopefully I'll have time to read them later this year.