I have read Prelude to foundation and it was a good book.

The characters in the book is interesting and the Galactica encyclopeida excepts is making me read more. I really want to know more about Hari Seldon and psychohistory.
I’m not sure if this can be called a science fiction novel. Sure, it’s in the future but dwells in politics and religion of all sorts. This makes the story more of a human tale explaining why we acts as we do. It’s not much science fiction and it’s a bit of a bummer. For me, that is.
Summing up, I really like the book and will read the remaining three books.