I tried to read the book over a period of years. Once I finished college I was able to make it a focus for a few months. I felt the first book was an enjoyable YA but as the series progressed it become more adult than I expected. For science fiction it didn’t go overboard and I felt welcomed in Lyra’s world. The series didn’t end the way I wanted it too and it’s still surprising I enjoyed it as much as I did.