Ι have read the first book and I want to read the others as well in english but I am from Greece. I speak fluently english but I am not sure I can manage it... Can anyone non english tell me if it is an easy book to read?

I felt the same way that Du do, and at first I wasn't sure if I could read the other books. Yet, the other Bücher are just as the first one Von language. There might be some confusing parts, but mostly, the Bücher are just great and simple. Hope you'll enjoy Lesen them! :)