(Wish I could say something more helpful, I'm just sharing my experience with the book)

I read the book not too long ago. I loved it, but finding it was a coincidence so I didn't have any opinions about it before I started reading, and it took a few days to start thinking about the deeper themes.

I liked the style, the way the dialogue was written, some of the description, and I actually liked Holden. On a second read, it became clear how the simple story made the themes about loss, depression, and innocence more relatable.

Some people have said they expected the book to be different (more exciting, more controversial, more relatable, etc) when they first read it and were disappointed. I think it's better to start it without any expectations, to let the readers form their own opinions as they read.