A friend showed it to me some years ago
I read the first two books and thought they were pretty awesome, even though the Norwegian version of the books kinda sucks. I was only eight at the time. They only had book #1-16 at the library, so after book 16, I just forgot about the them.
One year later, I saw some of the books in a bookstore, and bought two of them (#15 and #32)
That's when I got hooked. I found out that they had gotten almost every book at the library, so off course, I read them.
Now, at age twelve (very soon thirteen), I'm reading them in Norwegian again, and after I have finished all of them, I'm planning on reading them in English