A Biblefag here.
As I understand it Enoch is actually not dead as he transcended this earthly plain just like Elijah did.
These are likely the two witnesses who return as described in the book of Revelation.
His book was told to be "for a later time."
His work is quoted frequently throughout the New Testament. I've seen at least 5 direct incidents and several analogies to it.
Much of his work alluded to planetary alignment and heavenly portals that he accessed in a way similar to what the New Age calls astral projection.
If you want to know how the ancients like Sumerians/Egyptians/Mayans understood the star systems much better than us, then this book is one of the only written indicators.
Old Testament Jews were ruled by lunar calendar.
Since around the New Testament we have adopted solar calendars. (365 days)
I believe that is some of the importance of it.